[devel] Imported from libpng-1.4.0rc06.tar

[devel] Imported from libpng-1.4.0rc05.tar
[devel] Fix typo in INSTALL
2025-07-10 18:04:09 +02:00 · 2009-12-29 16:51:34 -06:00 · 2009-12-27 16:39:14 -06:00 · 2009-12-26 09:57:02 -06:00 · 2009-12-25 16:17:30 -06:00 · 2009-12-25 16:15:50 -06:00
64 changed files with 250 additions and 171 deletions
--- a/44
+++ b/44
@@ -1,5 +1,5 @@

-Libpng 1.4.0beta108 - December 11, 2009
+Libpng 1.4.0rc06 - December 29, 2009

 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -9,20 +9,20 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script

-   1.4.0beta108.tar.xz (LZMA-compressed, recommended)
-   1.4.0beta108.tar.gz
-   1.4.0beta108.tar.bz2
+   1.4.0rc06.tar.xz (LZMA-compressed, recommended)
+   1.4.0rc06.tar.gz
+   1.4.0rc06.tar.bz2

 Source files with CRLF line endings (for Windows), without the
 "configure" script

-   lp140b108.zip
-   lp140b108.7z
+   lp140r06.zip
+   lp140r06.7z

 Other information:

-   1.4.0beta108-README.txt
-   1.4.0beta108-LICENSE.txt
+   1.4.0rc06-README.txt
+   1.4.0rc06-LICENSE.txt

 Changes since the last public release (1.2.10):

@@ -734,6 +734,34 @@ version 1.4.0beta108 [December 11, 2009]
    change in version 1.2.41beta08 caused transparency to be handled wrong
    in some 16-bit datastreams (Yusaku Sugai).

+version 1.4.0beta109 [December 13, 2009]
+  Added "bit_depth" parameter to the private png_build_gamma_table() function.
+  Pass bit_depth=8 to png_build_gamma_table() when bit_depth is 16 but the
+    PNG_16_TO_8 transform has been set, to avoid unnecessary build of 16-bit
+    tables.
+
+version 1.4.0rc02 [December 20, 2009]
+  Declared png_cleanup_needed "volatile" in pngread.c and pngwrite.c
+
+version 1.4.0rc03 [December 22, 2009]
+  Renamed libpng-pc.in back to libpng.pc.in and revised CMakeLists.txt
+    (revising the change in 1.4.0beta99)
+
+version 1.4.0rc04 [December 25, 2009]
+  Swapped PNG_UNKNOWN_CHUNKS_SUPPORTED and PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+    in pngset.c to be consistent with other changes in version 1.2.38.
+
+version 1.4.0rc05 [December 25, 2009]
+  Changed "libpng-pc.in" to "libpng.pc.in" in configure.ac, configure, and
+    Makefile.in to be consistent with changes in libpng-1.4.0rc03
+
+version 1.4.0rc06 [December 29, 2009]
+  Reverted the gamma_table changes from libpng-1.4.0beta109.
+  Fixed some indentation errors.
+
+version 1.4.0 [December 29, 2009]
+  No changes.
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
--- a/28
+++ b/28
@@ -2421,6 +2421,34 @@ version 1.4.0beta108 [December 11, 2009]
    change in version 1.2.41beta08 caused transparency to be handled wrong
    in some 16-bit datastreams (Yusaku Sugai).

+version 1.4.0beta109 [December 13, 2009]
+  Added "bit_depth" parameter to the private png_build_gamma_table() function.
+  Pass bit_depth=8 to png_build_gamma_table() when bit_depth is 16 but the
+    PNG_16_TO_8 transform has been set, to avoid unnecessary build of 16-bit
+    tables.
+
+version 1.4.0rc02 [December 20, 2009]
+  Declared png_cleanup_needed "volatile" in pngread.c and pngwrite.c
+
+version 1.4.0rc03 [December 22, 2009]
+  Renamed libpng-pc.in back to libpng.pc.in and revised CMakeLists.txt
+    (revising the change in 1.4.0beta99)
+
+version 1.4.0rc04 [December 25, 2009]
+  Swapped PNG_UNKNOWN_CHUNKS_SUPPORTED and PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+    in pngset.c to be consistent with other changes in version 1.2.38.
+
+version 1.4.0rc05 [December 25, 2009]
+  Changed "libpng-pc.in" to "libpng.pc.in" in configure.ac, configure, and
+    Makefile.in to be consistent with changes in libpng-1.4.0rc03
+
+version 1.4.0rc06 [December 29, 2009]
+  Reverted the gamma_table changes from libpng-1.4.0beta109.
+  Fixed some indentation errors.
+
+version 1.4.0 [December 29, 2009]
+  No changes.
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,7 @@ endif()
 project(PNG C)
 enable_testing()

-# Copyright (C) 2007 Glenn Randers-Pehrson
+# Copyright (C) 2007-2010 Glenn Randers-Pehrson

 # This code is released under the libpng license.
 # For conditions of distribution and use, see the disclaimer
@@ -191,11 +191,11 @@ set(exec_prefix ${CMAKE_INSTALL_PREFIX})
 set(libdir      ${CMAKE_INSTALL_PREFIX}/lib)
 set(includedir  ${CMAKE_INSTALL_PREFIX}/include)

-configure_file(${PNG_SOURCE_DIR}/libpng-pc.in
+configure_file(${PNG_SOURCE_DIR}/libpng.pc.in
  ${PNG_BINARY_DIR}/libpng.pc)
 configure_file(${PNG_SOURCE_DIR}/libpng-config.in
  ${PNG_BINARY_DIR}/libpng-config)
-configure_file(${PNG_SOURCE_DIR}/libpng-pc.in
+configure_file(${PNG_SOURCE_DIR}/libpng.pc.in
  ${PNG_BINARY_DIR}/${PNGLIB_NAME}.pc)
 configure_file(${PNG_SOURCE_DIR}/libpng-config.in
  ${PNG_BINARY_DIR}/${PNGLIB_NAME}-config)
@@ -203,7 +203,7 @@ configure_file(${PNG_SOURCE_DIR}/libpng-config.in
 # SET UP LINKS
 if(PNG_SHARED)
  set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#    VERSION 14.${PNGLIB_RELEASE}.1.4.0beta108
+#    VERSION 14.${PNGLIB_RELEASE}.1.4.0rc06
     VERSION 14.${PNGLIB_RELEASE}.0
     SOVERSION 14
     CLEAN_DIRECT_OUTPUT 1)
--- a/10
+++ b/10
@@ -1,5 +1,5 @@

-Installing libpng version 1.4.0beta108 - December 11, 2009
+Installing libpng version 1.4.0rc06 - December 29, 2009

 On Unix/Linux and similar systems, you can simply type

@@ -46,7 +46,7 @@ to have access to the zlib.h and zconf.h include files that
 correspond to the version of zlib that's installed.

 You can rename the directories that you downloaded (they
-might be called "libpng-1.4.0beta108" or "libpng14" and "zlib-1.2.3"
+might be called "libpng-1.4.0rc06" or "libpng14" and "zlib-1.2.3"
 or "zlib123") so that you have directories called "zlib" and "libpng".

 Your directory structure should look like this:
@@ -60,10 +60,8 @@ Your directory structure should look like this:
          CMakeLists.txt    =>  "cmake" script
          configuration files:
             configure.ac, configure, Makefile.am, Makefile.in,
-%12-%             autogen.sh, config.guess, ltmain.sh, missing,
-%12-%             aclocal.m4, config.h.in, config.sub,
-%14+%             autogen.sh, config.guess, ltmain.sh, missing, libpng-pc.in,
-%14+%             libpng-config.in, aclocal.m4, config.h.in, config.sub,
+             autogen.sh, config.guess, ltmain.sh, missing,
+             aclocal.m4, config.h.in, config.sub,
             depcomp, install-sh, mkinstalldirs, test-pngtest.sh
          contrib
             gregbook
--- a/4
+++ b/4
@@ -10,7 +10,7 @@ this sentence.

 This code is released under the libpng license.

-libpng versions 1.2.6, August 15, 2004, through 1.4.0beta108, December 11, 2009, are
+libpng versions 1.2.6, August 15, 2004, through 1.4.0rc06, December 29, 2009, are
 Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -108,4 +108,4 @@ certification mark of the Open Source Initiative.

 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-December 11, 2009
+December 29, 2009
--- a/Makefile.am
+++ b/Makefile.am
@@ -80,7 +80,7 @@ EXTRA_DIST= \
 	${srcdir}/contrib/pngsuite/* \
 	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	example.c libpng-1.4.0beta108.txt
+	example.c libpng-1.4.0rc06.txt

 CLEANFILES= pngout.png libpng14.pc libpng14-config libpng.vers \
 libpng.sym
--- a/Makefile.in
+++ b/Makefile.in
@@ -53,7 +53,7 @@ subdir = .
 DIST_COMMON = README $(am__configure_deps) $(dist_man_MANS) \
 	$(pkginclude_HEADERS) $(srcdir)/Makefile.am \
 	$(srcdir)/Makefile.in $(srcdir)/config.h.in \
-	$(srcdir)/libpng-config.in $(srcdir)/libpng-pc.in \
+	$(srcdir)/libpng-config.in $(srcdir)/libpng.pc.in \
 	$(top_srcdir)/configure INSTALL TODO config.guess config.sub \
 	depcomp install-sh ltmain.sh missing mkinstalldirs
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
@@ -329,7 +329,7 @@ EXTRA_DIST = \
 	${srcdir}/contrib/pngsuite/* \
 	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	example.c libpng-1.4.0beta108.txt
+	example.c libpng-1.4.0rc06.txt

 CLEANFILES = pngout.png libpng14.pc libpng14-config libpng.vers \
 libpng.sym
@@ -393,7 +393,7 @@ $(srcdir)/config.h.in: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)

 distclean-hdr:
 	-rm -f config.h stamp-h1
-libpng.pc: $(top_builddir)/config.status $(srcdir)/libpng-pc.in
+libpng.pc: $(top_builddir)/config.status $(srcdir)/libpng.pc.in
 	cd $(top_builddir) && $(SHELL) ./config.status $@
 libpng-config: $(top_builddir)/config.status $(srcdir)/libpng-config.in
 	cd $(top_builddir) && $(SHELL) ./config.status $@
--- a/14
+++ b/14
@@ -1,4 +1,4 @@
-README for libpng version 1.4.0beta108 - December 11, 2009 (shared library 14.0)
+README for libpng version 1.4.0rc06 - December 29, 2009 (shared library 14.0)
 See the note about version numbers near the top of png.h

 See INSTALL for instructions on how to install libpng.
@@ -185,9 +185,9 @@ Files in this distribution:
       makefile.std     =>  Generic UNIX makefile (cc, creates static
                            libpng.a)
       makefile.elf     =>  Linux/ELF makefile symbol versioning,
-                            gcc, creates libpng14.so.14.1.4.0beta108)
+                            gcc, creates libpng14.so.14.1.4.0rc06)
       makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng14.so.14.1.4.0beta108)
+                            (gcc, creates libpng14.so.14.1.4.0rc06)
       makefile.gcc     =>  Generic makefile (gcc, creates static libpng.a)
       makefile.knr     =>  Archaic UNIX Makefile that converts files with
                            ansi2knr (Requires ansi2knr.c from
@@ -209,12 +209,12 @@ Files in this distribution:
       makefile.openbsd =>  OpenBSD makefile
       makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
       makefile.sggcc   =>  Silicon Graphics
-                            (gcc, creates libpng14.so.14.1.4.0beta108)
+                            (gcc, creates libpng14.so.14.1.4.0rc06)
       makefile.sunos   =>  Sun makefile
       makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng14.so.14.1.4.0beta108)
+                            (gcc, creates libpng14.so.14.1.4.0rc06)
       makefile.so9     =>  Solaris 9 makefile
-                            (gcc, creates libpng14.so.14.1.4.0beta108)
+                            (gcc, creates libpng14.so.14.1.4.0rc06)
       makefile.32sunu  =>  Sun Ultra 32-bit makefile
       makefile.64sunu  =>  Sun Ultra 64-bit makefile
       makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc
@@ -245,7 +245,7 @@ Files in this distribution:

 Good luck, and happy coding.

-Glenn Randers-Pehrson (current maintainer)
+-Glenn Randers-Pehrson (current maintainer, since 1998)
 Internet: glennrp at users.sourceforge.net

 -Andreas Eric Dilger (former maintainer, 1996-1997)
--- a/26
+++ b/26
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.65 for libpng 1.4.0beta108.
+# Generated by GNU Autoconf 2.65 for libpng 1.4.0rc06.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
@@ -701,8 +701,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.4.0beta108'
-PACKAGE_STRING='libpng 1.4.0beta108'
+PACKAGE_VERSION='1.4.0rc06'
+PACKAGE_STRING='libpng 1.4.0rc06'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 PACKAGE_URL=''

@@ -1432,7 +1432,7 @@ if test "$ac_init_help" = "long"; then
  # Omit some internal or obsolete options to make the list less imposing.
  # This message is too long to be a string in the A/UX 3.1 sh.
  cat <<_ACEOF
-\`configure' configures libpng 1.4.0beta108 to adapt to many kinds of systems.
+\`configure' configures libpng 1.4.0rc06 to adapt to many kinds of systems.

 Usage: $0 [OPTION]... [VAR=VALUE]...

@@ -1502,7 +1502,7 @@ fi

 if test -n "$ac_init_help"; then
  case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.4.0beta108:";;
+     short | recursive ) echo "Configuration of libpng 1.4.0rc06:";;
   esac
  cat <<\_ACEOF

@@ -1607,7 +1607,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
  cat <<\_ACEOF
-libpng configure 1.4.0beta108
+libpng configure 1.4.0rc06
 generated by GNU Autoconf 2.65

 Copyright (C) 2009 Free Software Foundation, Inc.
@@ -2032,7 +2032,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.

-It was created by libpng $as_me 1.4.0beta108, which was
+It was created by libpng $as_me 1.4.0rc06, which was
 generated by GNU Autoconf 2.65.  Invocation command line was

  $ $0 $@
@@ -2840,7 +2840,7 @@ fi

 # Define the identity of the package.
 PACKAGE='libpng'
- VERSION='1.4.0beta108'
+ VERSION='1.4.0rc06'


 cat >>confdefs.h <<_ACEOF
@@ -2904,7 +2904,7 @@ fi



-PNGLIB_VERSION=1.4.0beta108
+PNGLIB_VERSION=1.4.0rc06
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=4
 PNGLIB_RELEASE=0
@@ -11493,7 +11493,7 @@ fi


 # Config files, substituting as above
-ac_config_files="$ac_config_files Makefile libpng.pc:libpng-pc.in"
+ac_config_files="$ac_config_files Makefile libpng.pc:libpng.pc.in"

 ac_config_files="$ac_config_files libpng-config:libpng-config.in"

@@ -12027,7 +12027,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by libpng $as_me 1.4.0beta108, which was
+This file was extended by libpng $as_me 1.4.0rc06, which was
 generated by GNU Autoconf 2.65.  Invocation command line was

  CONFIG_FILES    = $CONFIG_FILES
@@ -12093,7 +12093,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-libpng config.status 1.4.0beta108
+libpng config.status 1.4.0rc06
 configured by $0, generated by GNU Autoconf 2.65,
  with options \\"\$ac_cs_config\\"

@@ -12476,7 +12476,7 @@ do
    "depfiles") CONFIG_COMMANDS="$CONFIG_COMMANDS depfiles" ;;
    "libtool") CONFIG_COMMANDS="$CONFIG_COMMANDS libtool" ;;
    "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
-    "libpng.pc") CONFIG_FILES="$CONFIG_FILES libpng.pc:libpng-pc.in" ;;
+    "libpng.pc") CONFIG_FILES="$CONFIG_FILES libpng.pc:libpng.pc.in" ;;
    "libpng-config") CONFIG_FILES="$CONFIG_FILES libpng-config:libpng-config.in" ;;

  *) as_fn_error "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
--- a/configure.ac
+++ b/configure.ac
@@ -18,12 +18,12 @@ AC_PREREQ(2.59)

 dnl Version number stuff here:

-AC_INIT([libpng], [1.4.0beta108], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.4.0rc06], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE

-PNGLIB_VERSION=1.4.0beta108
+PNGLIB_VERSION=1.4.0rc06
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=4
 PNGLIB_RELEASE=0
@@ -117,7 +117,7 @@ AC_ARG_WITH(binconfigs,
 AC_SUBST([binconfigs])

 # Config files, substituting as above
-AC_CONFIG_FILES([Makefile libpng.pc:libpng-pc.in])
+AC_CONFIG_FILES([Makefile libpng.pc:libpng.pc.in])
 AC_CONFIG_FILES([libpng-config:libpng-config.in],
 		[chmod +x libpng-config])

--- a/example.c
+++ b/example.c
@@ -2,7 +2,7 @@
 #if 0 /* in case someone actually tries to compile this */

 /* example.c - an example of using libpng
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * This file has been placed in the public domain by the authors.
 * Maintained 1998-2009 Glenn Randers-Pehrson
 * Maintained 1996, 1997 Andreas Dilger)
--- a/libpng-1.4.0beta108.txt
+++ b/libpng-1.4.0beta108.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng

- libpng version 1.4.0beta108 - December 11, 2009
+ libpng version 1.4.0rc06 - December 29, 2009
 Updated and distributed by Glenn Randers-Pehrson
 <glennrp at users.sourceforge.net>
 Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@ libpng.txt - A description on how to use and modify libpng

 Based on:

- libpng versions 0.97, January 1998, through 1.4.0beta108 - December 11, 2009
+ libpng versions 0.97, January 1998, through 1.4.0rc06 - December 29, 2009
 Updated and distributed by Glenn Randers-Pehrson
 Copyright (c) 1998-2009 Glenn Randers-Pehrson

@@ -878,7 +878,7 @@ things.
 As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
 added.  It expands the sample depth without changing tRNS to alpha.

-As of libpng version 1.4.0beta108, not all possible expansions are supported.
+As of libpng version 1.4.0rc06, not all possible expansions are supported.

 In the following table, the 01 means grayscale with depth<8, 31 means
 indexed with depth<8, other numerals represent the color type, "T" means
@@ -3003,7 +3003,13 @@ Support for global arrays was removed.

 Some obsolete/deprecated macros and functions have been removed.

-The obsolete, unused pnggccrd.c and pngvcrd.files were removed.
+Typecasted NULL definitions such as
+   #define png_voidp_NULL            (png_voidp)NULL
+were eliminated.  If you used these in your application, just use
+NULL instead.
+
+The obsolete, unused pnggccrd.c and pngvcrd.c files and related makefiles
+%were removed.

 The PNG_1_0_X and PNG_1_2_X macros were eliminated.

@@ -3209,17 +3215,19 @@ when there is only one macro being tested.

 We do not use the TAB character for indentation in the C sources.

+Lines do not exceed 80 characters.
+
 Other rules can be inferred by inspecting the libpng source.

 XIII. Y2K Compliance in libpng

-December 11, 2009
+December 29, 2009

 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.

 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.4.0beta108 are Y2K compliant.  It is my belief that earlier
+upward through 1.4.0rc06 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.

 Libpng only has three year fields.  One is a 2-byte unsigned integer that
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "December 11, 2009"
+.TH LIBPNG 3 "December 29, 2009"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta108
+libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0rc06
 .SH SYNOPSIS
 \fI\fB

@@ -777,7 +777,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng

- libpng version 1.4.0beta108 - December 11, 2009
+ libpng version 1.4.0rc06 - December 29, 2009
 Updated and distributed by Glenn Randers-Pehrson
 <glennrp at users.sourceforge.net>
 Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -788,7 +788,7 @@ libpng.txt - A description on how to use and modify libpng

 Based on:

- libpng versions 0.97, January 1998, through 1.4.0beta108 - December 11, 2009
+ libpng versions 0.97, January 1998, through 1.4.0rc06 - December 29, 2009
 Updated and distributed by Glenn Randers-Pehrson
 Copyright (c) 1998-2009 Glenn Randers-Pehrson

@@ -1655,7 +1655,7 @@ things.
 As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
 added.  It expands the sample depth without changing tRNS to alpha.

-As of libpng version 1.4.0beta108, not all possible expansions are supported.
+As of libpng version 1.4.0rc06, not all possible expansions are supported.

 In the following table, the 01 means grayscale with depth<8, 31 means
 indexed with depth<8, other numerals represent the color type, "T" means
@@ -3780,7 +3780,13 @@ Support for global arrays was removed.

 Some obsolete/deprecated macros and functions have been removed.

-The obsolete, unused pnggccrd.c and pngvcrd.files were removed.
+Typecasted NULL definitions such as
+   #define png_voidp_NULL            (png_voidp)NULL
+were eliminated.  If you used these in your application, just use
+NULL instead.
+
+The obsolete, unused pnggccrd.c and pngvcrd.c files and related makefiles
+%were removed.

 The PNG_1_0_X and PNG_1_2_X macros were eliminated.

@@ -3986,17 +3992,19 @@ when there is only one macro being tested.

 We do not use the TAB character for indentation in the C sources.

+Lines do not exceed 80 characters.
+
 Other rules can be inferred by inspecting the libpng source.

 .SH XIII. Y2K Compliance in libpng

-December 11, 2009
+December 29, 2009

 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.

 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.4.0beta108 are Y2K compliant.  It is my belief that earlier
+upward through 1.4.0rc06 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.

 Libpng only has three year fields.  One is a 2-byte unsigned integer that
@@ -4166,7 +4174,9 @@ the first widely used release:
 1.4.0beta15-36      14    10400  14.so.0.0[.0]
 1.4.0beta37-87      14    10400  14.so.14.0[.0]
 1.4.0rc01           14    10400  14.so.14.0[.0]
- 1.4.0beta88-108     14    10400  14.so.14.0[.0]
+ 1.4.0beta88-109     14    10400  14.so.14.0[.0]
+ 1.4.0rc02-06        14    10400  14.so.14.0[.0]
+ 1.4.0               14    10400  14.so.14.0[.0]

 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -4222,7 +4232,7 @@ possible without all of you.

 Thanks to Frank J. T. Wojcik for helping with the documentation.

-Libpng version 1.4.0beta108 - December 11, 2009:
+Libpng version 1.4.0rc06 - December 29, 2009:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).

@@ -4245,7 +4255,7 @@ this sentence.

 This code is released under the libpng license.

-libpng versions 1.2.6, August 15, 2004, through 1.4.0beta108, December 11, 2009, are
+libpng versions 1.2.6, August 15, 2004, through 1.4.0rc06, December 29, 2009, are
 Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -4344,7 +4354,7 @@ certification mark of the Open Source Initiative.

 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-December 11, 2009
+December 29, 2009

 .\" end of man page

--- a/libpng.pc.in
+++ b/libpng.pc.in
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "December 11, 2009"
+.TH LIBPNGPF 3 "December 29, 2009"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta108
+libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0rc06
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP
@@ -15,7 +15,7 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta108

 \fI\fB

-\fBvoid png_build_gamma_table (png_structp \fIpng_ptr\fP\fB);\fP
+\fBvoid png_build_gamma_table (png_structp \fP\fIpng_ptr\fP\fB, png_byte \fIbit_depth\fP\fB);\fP

 \fI\fB

--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "December 11, 2009"
+.TH PNG 5 "December 29, 2009"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
--- a/png.c
+++ b/png.c
@@ -1,7 +1,7 @@

 /* png.c - location for general purpose libpng functions
 *
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -17,7 +17,7 @@
 #include "pngpriv.h"

 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_4_0beta108 Your_png_h_is_not_version_1_4_0beta108;
+typedef version_1_4_0rc06 Your_png_h_is_not_version_1_4_0rc06;

 /* Version information for C files.  This had better match the version
 * string defined in png.h.
@@ -315,7 +315,7 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
            for (i = 0; i < (int)info_ptr->pcal_nparams; i++)
            {
               png_free(png_ptr, info_ptr->pcal_params[i]);
-               info_ptr->pcal_params[i]=NULL;
+               info_ptr->pcal_params[i] = NULL;
            }
            png_free(png_ptr, info_ptr->pcal_params);
            info_ptr->pcal_params = NULL;
@@ -430,8 +430,10 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
         for (row = 0; row < (int)info_ptr->height; row++)
         {
            png_free(png_ptr, info_ptr->row_pointers[row]);
+            info_ptr->row_pointers[row] = NULL;
         }
         png_free(png_ptr, info_ptr->row_pointers);
+         info_ptr->row_pointers = NULL;
      }
      info_ptr->valid &= ~PNG_INFO_IDAT;
   }
@@ -458,6 +460,7 @@ png_info_destroy(png_structp png_ptr, png_infop info_ptr)
   if (png_ptr->num_chunk_list)
   {
      png_free(png_ptr, png_ptr->chunk_list);
+      png_ptr->chunk_list = NULL;
      png_ptr->num_chunk_list = 0;
   }
 #endif
@@ -548,14 +551,14 @@ png_get_copyright(png_structp png_ptr)
 #else
 #ifdef __STDC__
   return ((png_charp) PNG_STRING_NEWLINE \
-     "libpng version 1.4.0beta108 - December 11, 2009" PNG_STRING_NEWLINE \
-     "Copyright (c) 1998-2009 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
+     "libpng version 1.4.0rc06 - December 29, 2009" PNG_STRING_NEWLINE \
+     "Copyright (c) 1998-2010 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
     "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
     "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
     PNG_STRING_NEWLINE);
 #else
-      return ((png_charp) "libpng version 1.4.0beta108 - December 11, 2009\
-      Copyright (c) 1998-2009 Glenn Randers-Pehrson\
+      return ((png_charp) "libpng version 1.4.0rc06 - December 29, 2009\
+      Copyright (c) 1998-2010 Glenn Randers-Pehrson\
      Copyright (c) 1996-1997 Andreas Dilger\
      Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");
 #endif
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@

 /* png.h - header file for PNG reference library
 *
- * libpng version 1.4.0beta108 - December 11, 2009
+ * libpng version 1.4.0rc06 - December 29, 2009
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -11,7 +11,7 @@
 * Authors and maintainers:
 *  libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
 *  libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- *  libpng versions 0.97, January 1998, through 1.4.0beta108 - December 11, 2009: Glenn
+ *  libpng versions 0.97, January 1998, through 1.4.0rc06 - December 29, 2009: Glenn
 *  See also "Contributing Authors", below.
 *
 * Note about libpng version numbers:
@@ -131,7 +131,9 @@
 *    1.4.0beta15-36          14    10400  14.so.0.0[.0]
 *    1.4.0beta37-87          14    10400  14.so.14.0[.0]
 *    1.4.0rc01               14    10400  14.so.14.0[.0]
- *    1.4.0beta88-108         14    10400  14.so.14.0[.0]
+ *    1.4.0beta88-109         14    10400  14.so.14.0[.0]
+ *    1.4.0rc02-06            14    10400  14.so.14.0[.0]
+ *    1.4.0                   14    10400  14.so.14.0[.0]
 *
 *    Henceforth the source version will match the shared-library major
 *    and minor numbers; the shared-library major version number will be
@@ -163,8 +165,8 @@
 *
 * This code is released under the libpng license.
 *
- * libpng versions 1.2.6, August 15, 2004, through 1.4.0beta108, December 11, 2009, are
- * Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
+ * libpng versions 1.2.6, August 15, 2004, through 1.4.0rc06, December 29, 2009, are
+ * Copyright (c) 2004, 2006-2009 Glenn Randers-Pehrson, and are
 * distributed according to the same disclaimer and license as libpng-1.2.5
 * with the following individual added to the list of Contributing Authors:
 *
@@ -275,13 +277,13 @@
 * Y2K compliance in libpng:
 * =========================
 *
- *    July 1, 2008
+ *    December 29, 2009
 *
 *    Since the PNG Development group is an ad-hoc body, we can't make
 *    an official declaration.
 *
 *    This is your unofficial assurance that libpng from version 0.71 and
- *    upward through 1.4.0beta108 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.4.0rc06 are Y2K compliant.  It is my belief that earlier
 *    versions were also Y2K compliant.
 *
 *    Libpng only has three year fields.  One is a 2-byte unsigned integer
@@ -337,9 +339,9 @@
 */

 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.4.0beta108"
+#define PNG_LIBPNG_VER_STRING "1.4.0rc06"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.4.0beta108 - December 11, 2009\n"
+   " libpng version 1.4.0rc06 - December 29, 2009\n"

 #define PNG_LIBPNG_VER_SONUM   14
 #define PNG_LIBPNG_VER_DLLNUM  14
@@ -352,7 +354,7 @@
 * PNG_LIBPNG_VER_STRING, omitting any leading zero:
 */

-#define PNG_LIBPNG_VER_BUILD  108
+#define PNG_LIBPNG_VER_BUILD  06

 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -1341,7 +1343,7 @@ struct png_struct_def
 /* This triggers a compiler error in png.c, if png.c and png.h
 * do not agree upon the version number.
 */
-typedef png_structp version_1_4_0beta108;
+typedef png_structp version_1_4_0rc06;

 typedef png_struct FAR * FAR * png_structpp;

--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@

 /* pngconf.h - machine configurable file for libpng
 *
- * libpng version 1.4.0beta108 - December 11, 2009
+ * libpng version 1.4.0rc06 - December 29, 2009
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
--- a/pngerror.c
+++ b/pngerror.c
@@ -1,7 +1,7 @@

 /* pngerror.c - stub functions for i/o and memory allocation
 *
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
--- a/pngget.c
+++ b/pngget.c
@@ -1,7 +1,7 @@

 /* pngget.c - retrieval of values from info struct
 *
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
--- a/pngmem.c
+++ b/pngmem.c
@@ -1,7 +1,7 @@

 /* pngmem.c - stub functions for memory allocation
 *
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,7 +1,7 @@

 /* pngpread.c - read a png file in push mode
 *
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -1565,7 +1565,7 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)

      png_free(png_ptr, text_ptr);
      if (ret)
-        png_warning(png_ptr, "Insufficient memory to store iTXt chunk");
+         png_warning(png_ptr, "Insufficient memory to store iTXt chunk");
   }
 }
 #endif
@@ -1620,7 +1620,7 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
      else
      {
         png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr,
-       (png_size_t)length);
+            (png_size_t)length);
         png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
      }

--- a/pngpriv.h
+++ b/pngpriv.h
@@ -1,7 +1,7 @@

 /* pngpriv.h - private declarations for use inside libpng
 *
- * libpng version 1.4.0beta108 - December 11, 2009
+ * libpng version 1.4.0rc06 - December 29, 2009
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -475,7 +475,8 @@ PNG_EXTERN void png_write_finish_row PNGARG((png_structp png_ptr));
 PNG_EXTERN void png_write_start_row PNGARG((png_structp png_ptr));

 #ifdef PNG_READ_GAMMA_SUPPORTED
-PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr));
+PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr,
+   png_byte bit_depth));
 #endif

 /* Combine a row of data, dealing with alpha, etc. if requested */
--- a/pngread.c
+++ b/pngread.c
@@ -1,7 +1,7 @@

 /* pngread.c - read a PNG file
 *
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -43,7 +43,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
   volatile
 #endif
   png_structp png_ptr;
-   int png_cleanup_needed = 0;
+   volatile int png_cleanup_needed = 0;

 #ifdef PNG_SETJMP_SUPPORTED
 #ifdef USE_FAR_KEYWORD
--- a/pngrio.c
+++ b/pngrio.c
@@ -1,7 +1,7 @@

 /* pngrio.c - functions for data input
 *
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,7 +1,7 @@

 /* pngrtran.c - transforms the data in a row for PNG readers
 *
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -886,7 +886,8 @@ png_init_read_transformations(png_structp png_ptr)
   if ((png_ptr->transformations & (PNG_GAMMA | PNG_RGB_TO_GRAY)) &&
        png_ptr->gamma != 0.0)
   {
-      png_build_gamma_table(png_ptr);
+      png_build_gamma_table(png_ptr, png_ptr->bit_depth);
+
 #ifdef PNG_READ_BACKGROUND_SUPPORTED
      if (png_ptr->transformations & PNG_BACKGROUND)
      {
@@ -3910,11 +3911,11 @@ static PNG_CONST int png_gamma_shift[] =
 */

 void /* PRIVATE */
-png_build_gamma_table(png_structp png_ptr)
+png_build_gamma_table(png_structp png_ptr, png_byte bit_depth)
 {
  png_debug(1, "in png_build_gamma_table");

-  if (png_ptr->bit_depth <= 8)
+  if (bit_depth <= 8)
  {
     int i;
     double g;
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,7 +1,7 @@

 /* pngrutil.c - utilities to read a PNG file
 *
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
--- a/pngset.c
+++ b/pngset.c
@@ -1,7 +1,7 @@

 /* pngset.c - storage of image information into info struct
 *
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -389,7 +389,7 @@ png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
   if (info_ptr->scal_s_width == NULL)
   {
      png_warning(png_ptr,
-       "Memory allocation failed while processing sCAL");
+         "Memory allocation failed while processing sCAL");
      return;
   }
   png_memcpy(info_ptr->scal_s_width, swidth, length);
@@ -403,7 +403,7 @@ png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
      png_free (png_ptr, info_ptr->scal_s_width);
      info_ptr->scal_s_width = NULL;
      png_warning(png_ptr,
-       "Memory allocation failed while processing sCAL");
+         "Memory allocation failed while processing sCAL");
      return;
   }
   png_memcpy(info_ptr->scal_s_height, sheight, length);
@@ -452,8 +452,7 @@ png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
      }
   }

-   /*
-    * It may not actually be necessary to set png_ptr->palette here;
+   /* It may not actually be necessary to set png_ptr->palette here;
    * we do it for backward compatibility with the way the png_handle_tRNS
    * function used to do the allocation.
    */
@@ -593,7 +592,7 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
   new_iccp_name = (png_charp)png_malloc_warn(png_ptr, length);
   if (new_iccp_name == NULL)
   {
-      png_warning(png_ptr, "Insufficient memory to process iCCP chunk");
+        png_warning(png_ptr, "Insufficient memory to process iCCP chunk");
      return;
   }
   png_memcpy(new_iccp_name, name, length);
@@ -602,7 +601,7 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
   {
      png_free (png_ptr, new_iccp_name);
      png_warning(png_ptr,
-      "Insufficient memory to process iCCP profile");
+          "Insufficient memory to process iCCP profile");
      return;
   }
   png_memcpy(new_iccp_profile, profile, (png_size_t)proflen);
@@ -613,7 +612,8 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
   info_ptr->iccp_name = new_iccp_name;
   info_ptr->iccp_profile = new_iccp_profile;
   /* Compression is always zero but is here so the API and info structure
-    * does not have to change if we introduce multiple compression types */
+    * does not have to change if we introduce multiple compression types
+    */
   info_ptr->iccp_compression = (png_byte)compression_type;
   info_ptr->free_me |= PNG_FREE_ICCP;
   info_ptr->valid |= PNG_INFO_iCCP;
@@ -886,11 +886,11 @@ png_set_sPLT(png_structp png_ptr,
   if (np == NULL)
   {
      png_warning(png_ptr, "No memory for sPLT palettes");
-     return;
+      return;
   }

   png_memcpy(np, info_ptr->splt_palettes,
-          info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t));
+       info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t));
   png_free(png_ptr, info_ptr->splt_palettes);
   info_ptr->splt_palettes=NULL;

@@ -901,7 +901,7 @@ png_set_sPLT(png_structp png_ptr,
      png_uint_32 length;

      length = png_strlen(from->name) + 1;
-        to->name = (png_charp)png_malloc_warn(png_ptr, (png_size_t)length);
+      to->name = (png_charp)png_malloc_warn(png_ptr, (png_size_t)length);
      if (to->name == NULL)
      {
         png_warning(png_ptr,
@@ -910,7 +910,7 @@ png_set_sPLT(png_structp png_ptr,
      }
      png_memcpy(to->name, from->name, length);
      to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr,
-            (png_size_t)(from->nentries * png_sizeof(png_sPLT_entry)));
+          (png_size_t)(from->nentries * png_sizeof(png_sPLT_entry)));
      if (to->entries == NULL)
      {
         png_warning(png_ptr,
@@ -932,7 +932,7 @@ png_set_sPLT(png_structp png_ptr,
 }
 #endif /* PNG_sPLT_SUPPORTED */

-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
 void PNGAPI
 png_set_unknown_chunks(png_structp png_ptr,
   png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns)
@@ -949,22 +949,22 @@ png_set_unknown_chunks(png_structp png_ptr,
   if (np == NULL)
   {
      png_warning(png_ptr,
-         "Out of memory while processing unknown chunk");
+          "Out of memory while processing unknown chunk");
      return;
   }

   png_memcpy(np, info_ptr->unknown_chunks,
-          info_ptr->unknown_chunks_num * png_sizeof(png_unknown_chunk));
+       info_ptr->unknown_chunks_num * png_sizeof(png_unknown_chunk));
   png_free(png_ptr, info_ptr->unknown_chunks);
+   info_ptr->unknown_chunks = NULL;

   for (i = 0; i < num_unknowns; i++)
   {
      png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i;
      png_unknown_chunkp from = unknowns + i;

-      png_memcpy((png_charp)to->name,
-                 (png_charp)from->name,
-                 png_sizeof(from->name));
+      png_memcpy((png_charp)to->name, (png_charp)from->name,
+          png_sizeof(from->name));
      to->name[png_sizeof(to->name)-1] = '\0';
      to->size = from->size;
      /* Note our location in the read or write sequence */
@@ -996,7 +996,7 @@ png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr,
   int chunk, int location)
 {
   if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk <
-         (int)info_ptr->unknown_chunks_num)
+       (int)info_ptr->unknown_chunks_num)
      info_ptr->unknown_chunks[chunk].location = (png_byte)location;
 }
 #endif
@@ -1016,7 +1016,7 @@ png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features)
 }
 #endif

-#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
 void PNGAPI
 png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
   chunk_list, int num_chunks)
@@ -1043,16 +1043,16 @@ png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
   old_num_chunks = png_ptr->num_chunk_list;
   new_list=(png_bytep)png_malloc(png_ptr,
      (png_size_t)
-      (5*(num_chunks + old_num_chunks)));
+       (5*(num_chunks + old_num_chunks)));
   if (png_ptr->chunk_list != NULL)
   {
      png_memcpy(new_list, png_ptr->chunk_list,
-         (png_size_t)(5*old_num_chunks));
+          (png_size_t)(5*old_num_chunks));
      png_free(png_ptr, png_ptr->chunk_list);
      png_ptr->chunk_list=NULL;
   }
   png_memcpy(new_list + 5*old_num_chunks, chunk_list,
-      (png_size_t)(5*num_chunks));
+       (png_size_t)(5*num_chunks));
   for (p = new_list + 5*old_num_chunks + 4, i = 0; i<num_chunks; i++, p += 5)
      *p=(png_byte)keep;
   png_ptr->num_chunk_list = old_num_chunks + num_chunks;
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,7 +1,7 @@

 /* pngtest.c - a simple test program to test libpng
 *
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -1619,4 +1619,4 @@ main(int argc, char *argv[])
 }

 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_4_0beta108 your_png_h_is_not_version_1_4_0beta108;
+typedef version_1_4_0rc06 your_png_h_is_not_version_1_4_0rc06;
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -1,7 +1,7 @@

 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
 *
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
--- a/pngwio.c
+++ b/pngwio.c
@@ -1,7 +1,7 @@

 /* pngwio.c - functions for data output
 *
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,7 +1,7 @@

 /* pngwrite.c - general routines to write a PNG file
 *
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -468,7 +468,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
   png_malloc_ptr malloc_fn, png_free_ptr free_fn)
 {
 #endif /* PNG_USER_MEM_SUPPORTED */
-   int png_cleanup_needed = 0;
+   volatile int png_cleanup_needed = 0;
 #ifdef PNG_SETJMP_SUPPORTED
   volatile
 #endif
--- a/pngwtran.c
+++ b/pngwtran.c
@@ -1,7 +1,7 @@

 /* pngwtran.c - transforms the data in a row for PNG writers
 *
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,7 +1,7 @@

 /* pngwutil.c - utilities to write a PNG file
 *
- * Last changed in libpng 1.4.0 [December 11, 2009]
+ * Last changed in libpng 1.4.0 [December 29, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
--- a/projects/xcode/libpng.xcodeproj/project.pbxproj
+++ b/projects/xcode/libpng.xcodeproj/project.pbxproj
@@ -226,7 +226,7 @@
 				COPY_PHASE_STRIP = NO;
 				DYLIB_COMPATIBILITY_VERSION = 14;
 				DYLIB_CURRENT_VERSION = 14;
-				FRAMEWORK_VERSION = 1.4.0beta108;
+				FRAMEWORK_VERSION = 1.4.0rc06;
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;
 				GCC_PREFIX_HEADER = "";
 				INFOPLIST_FILE = Info.plist;
@@ -244,7 +244,7 @@
 			buildSettings = {
 				DYLIB_COMPATIBILITY_VERSION = 14;
 				DYLIB_CURRENT_VERSION = 14;
-				FRAMEWORK_VERSION = 1.4.0beta108;
+				FRAMEWORK_VERSION = 1.4.0rc06;
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;
 				GCC_PREFIX_HEADER = "";
 				INFOPLIST_FILE = Info.plist;
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,8 +1,8 @@

-Makefiles for  libpng version 1.4.0beta108 - December 11, 2009
+Makefiles for  libpng version 1.4.0rc06 - December 29, 2009

 makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng14.so.14.1.4.0beta108)
+                       (gcc, creates libpng14.so.14.1.4.0rc06)
 makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
 makefile.knr      =>  Archaic UNIX Makefile that converts files with
                       ansi2knr (Requires ansi2knr.c from
@@ -20,7 +20,7 @@ Makefiles for  libpng version 1.4.0beta108 - December 11, 2009
 makefile.dec      =>  DEC Alpha UNIX makefile
 makefile.dj2      =>  DJGPP 2 makefile
 makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       gcc, creates libpng14.so.14.1.4.0beta108)
+                       gcc, creates libpng14.so.14.1.4.0rc06)
 makefile.freebsd  =>  FreeBSD makefile
 makefile.gcc      =>  Generic gcc makefile
 makefile.hpgcc    =>  HPUX makefile using gcc
@@ -36,12 +36,12 @@ Makefiles for  libpng version 1.4.0beta108 - December 11, 2009
 makefile.os2      =>  OS/2 Makefile (gcc and emx, requires pngos2.def)
 makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
 makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng14.so.14.1.4.0beta108)
+                       creates libpng14.so.14.1.4.0rc06)
 makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
 makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng14.so.14.1.4.0beta108)
+                       creates libpng14.so.14.1.4.0rc06)
 makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng14.so.14.1.4.0beta108)
+                       creates libpng14.so.14.1.4.0rc06)
 makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
 makefile.sunos    =>  Sun makefile
 makefile.32sunu   =>  Sun Ultra 32-bit makefile
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -11,7 +11,7 @@

 # Modeled after libxml-config.

-version=1.4.0beta108
+version=1.4.0rc06
 prefix=""
 libdir=""
 libs=""
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -5,6 +5,6 @@ includedir=@includedir@/libpng14

 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.4.0beta108
+Version: 1.4.0rc06
 Libs: -L${libdir} -lpng14
 Cflags: -I${includedir}
--- a/scripts/makefile.32sunu
+++ b/scripts/makefile.32sunu
@@ -11,7 +11,7 @@
 # Library name:
 LIBNAME=libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.64sunu
+++ b/scripts/makefile.64sunu
@@ -11,7 +11,7 @@
 # Library name:
 LIBNAME=libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -23,7 +23,7 @@ LN_SF = ln -f -s

 LIBNAME=libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 prefix=/usr/local
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -11,7 +11,7 @@
 # Library name:
 LIBNAME=libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.cygwin
+++ b/scripts/makefile.cygwin
@@ -68,7 +68,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
 LIBNAME = libpng14
 PNGMAJ = 14
 CYGDLL = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 SHAREDLIB=cygpng$(CYGDLL).dll
--- a/scripts/makefile.darwin
+++ b/scripts/makefile.darwin
@@ -22,7 +22,7 @@ ZLIBINC=../zlib
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.dec
+++ b/scripts/makefile.dec
@@ -8,7 +8,7 @@

 # Library name:
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng14

--- a/scripts/makefile.elf
+++ b/scripts/makefile.elf
@@ -16,7 +16,7 @@
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.hp64
+++ b/scripts/makefile.hp64
@@ -21,7 +21,7 @@ ZLIBINC=/opt/zlib/include
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.hpgcc
+++ b/scripts/makefile.hpgcc
@@ -11,7 +11,7 @@
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.hpux
+++ b/scripts/makefile.hpux
@@ -21,7 +21,7 @@ ZLIBINC=/opt/zlib/include
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -10,7 +10,7 @@
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.mingw
+++ b/scripts/makefile.mingw
@@ -68,7 +68,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
 LIBNAME = libpng14
 PNGMAJ = 14
 MINGDLL = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 SHAREDLIB=libpng$(MINGDLL).dll
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include/libpng14

 LIB=	png14
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.4.0beta108
+SHLIB_MINOR=	1.4.0rc06
 SRCS=	png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include

 LIB=	png
 SHLIB_MAJOR=	3
-SHLIB_MINOR=	1.4.0beta108
+SHLIB_MINOR=	1.4.0rc06
 SRCS=	png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -11,7 +11,7 @@ LIBDIR=	${PREFIX}/lib
 MANDIR= ${PREFIX}/man/cat

 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.4.0beta108
+SHLIB_MINOR=	1.4.0rc06

 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \
--- a/scripts/makefile.sco
+++ b/scripts/makefile.sco
@@ -12,7 +12,7 @@
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.sggcc
+++ b/scripts/makefile.sggcc
@@ -9,7 +9,7 @@
 # Library name:
 LIBNAME=libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.sgi
+++ b/scripts/makefile.sgi
@@ -9,7 +9,7 @@
 # Library name:
 LIBNAME=libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.so9
+++ b/scripts/makefile.so9
@@ -11,7 +11,7 @@

 # Library name:
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng14

--- a/scripts/makefile.solaris
+++ b/scripts/makefile.solaris
@@ -11,7 +11,7 @@
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/makefile.solaris-x86
+++ b/scripts/makefile.solaris-x86
@@ -11,7 +11,7 @@
 # Library name:
 LIBNAME = libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta108
+PNGMIN = 1.4.0rc06
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
--- a/scripts/png32ce.def
+++ b/scripts/png32ce.def
@@ -15,7 +15,7 @@ LIBRARY lpngce
 png_get_int_32

 EXPORTS
-;Version 1.4.0beta108
+;Version 1.4.0rc06
  png_build_grayscale_palette  @1
 ;  png_check_sig        @2
  png_chunk_error      @3
--- a/scripts/pngos2.def
+++ b/scripts/pngos2.def
@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------

-; Version 1.4.0beta108
+; Version 1.4.0rc06

 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"
--- a/scripts/pngwin.def
+++ b/scripts/pngwin.def
@@ -5,7 +5,7 @@
 LIBRARY

 EXPORTS
-;Version 1.4.0beta108
+;Version 1.4.0rc06
  png_build_grayscale_palette
  png_chunk_error
  png_chunk_warning
Author	SHA1	Message	Date
Glenn Randers-Pehrson	f81b50bf9d	[devel] Imported from libpng-1.4.0rc06.tar	2009-12-29 16:51:34 -06:00
Glenn Randers-Pehrson	e52c7ac7a3	[devel] Imported from libpng-1.4.0rc05.tar	2009-12-27 16:39:14 -06:00
Glenn Randers-Pehrson	5ce838be40	[devel] Fix typo in INSTALL	2009-12-26 09:57:02 -06:00
Glenn Randers-Pehrson	a687af1e72	[devel] Changed "libpng-pc.in" to "libpng.pc.in" in configure.ac, configure, and Makefile.in to be consistent with changes in libpng-1.4.0rc03	2009-12-25 16:17:30 -06:00
Glenn Randers-Pehrson	70529c3b40	[devel] Bump version to 1.4.0rc05	2009-12-25 16:15:50 -06:00
Glenn Randers-Pehrson	dbcfb7151f	[devel] Imported from libpng-1.4.0rc04.tar	2009-12-25 14:27:23 -06:00
Glenn Randers-Pehrson	6ba9088de9	[devel] Swapped PNG_UNKNOWN_CHUNKS_SUPPORTED and PNG_HANDLE_AS_UNKNOWN_SUPPORTED in pngset.c to be consistent with other changes in version 1.2.38.	2009-12-25 14:26:13 -06:00
Glenn Randers-Pehrson	7520224a42	[devel] Bump to version 1.4.0rc04	2009-12-25 14:25:29 -06:00
Glenn Randers-Pehrson	296f64a43e	[devel] Imported from libpng-1.4.0rc03.tar	2009-12-22 09:38:19 -06:00
Glenn Randers-Pehrson	d44e05a363	[master] Renamed libpng-pc.in back to libpng.pc.in and revised CMakeLists.txt (revising the change in 1.4.0beta99)	2009-12-22 09:16:15 -06:00
Glenn Randers-Pehrson	5265c3889c	[devel] Bump to version 1.4.0rc03	2009-12-22 09:10:46 -06:00
Glenn Randers-Pehrson	62ca98ef5e	[devel] Imported from libpng-1.4.0rc02.tar	2009-12-20 15:16:15 -06:00
Glenn Randers-Pehrson	094340d287	[devel] Bump to version 1.4.0beta110	2009-12-13 15:39:00 -06:00
Glenn Randers-Pehrson	addb84b1bc	[devel] Imported from libpng-1.4.0beta109.tar	2009-12-13 08:15:55 -06:00
Glenn Randers-Pehrson	ffa8924330	[devel] Added "bit_depth" parameter to the private png_build_gamma_table() function. Pass bit_depth=8 to png_build_gamma_table() when bit_depth is 16 but the PNG_16_TO_8 transform has been set, to avoid unnecessary build of 16-bit tables.	2009-12-13 08:14:40 -06:00