[libpng16] Imported from libpng-1.6.22.tar

ANNOUNCE

@@ -1,31 +1,28 @@
-Libpng 1.6.22rc04 - May 18, 2016
+Libpng 1.6.22 - May 26, 2016
 
-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.
+This is a public release of libpng, intended for use in production codes.
 
 Files available for download:
 
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   1.6.22rc04.tar.xz (LZMA-compressed, recommended)
-   1.6.22rc04.tar.gz
+   libpng-1.6.22.tar.xz (LZMA-compressed, recommended)
+   libpng-1.6.22.tar.gz
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp1622r04.7z  (LZMA-compressed, recommended)
-   lp1622r04.zip
+   lpng1622.7z  (LZMA-compressed, recommended)
+   lpng1622.zip
 
 Other information:
 
-   1.6.22rc04-README.txt
-   1.6.22rc04-LICENSE.txt
-   libpng-1.6.22rc04-*.asc (armored detached GPG signatures)
+   libpng-1.6.22-README.txt
+   libpng-1.6.22-LICENSE.txt
+   libpng-1.6.22-*.asc (armored detached GPG signatures)
 
 Changes since the last public release (1.6.21):
-
-Version 1.6.22beta01 [January 23, 2016]
   Changed PNG_USE_MKSTEMP to __COVERITY__ to select alternate
     "tmpfile()" implementation in contrib/libtests/pngstest.c
   Fixed NO_STDIO build of pngunknown.c to skip calling png_init_io()
@@ -39,12 +36,7 @@ Version 1.6.22beta01 [January 23, 2016]
     a quiet API change that limits in-memory image size (uncompressed) to
     less than 4GByte and image row size (stride) to less than 2GByte.
   Revised workaround for false-positive Coverity issue in pngvalid.c.
-
-Version 1.6.22beta02 [February 8, 2016]
   Only use exit(77) in configure builds.
-  Corrected error in PNG_IMAGE_PNG_SIZE_MAX. This new macro underreported
-    the palette size because it failed to take into account that the memory
-    palette has to be expanded to full RGB when it is written to PNG.
   Updated CMakeLists.txt, added supporting scripts/gen*.cmake.in
     and test.cmake.in (Roger Leigh).
   Relaxed limit checks on gamma values in pngrtran.c. As suggested in
@@ -53,8 +45,6 @@ Version 1.6.22beta02 [February 8, 2016]
     are already permitted by png_set_gamma so it is reasonable caution to
     extend the png_set_alpha_mode range as HDR imaging systems are starting
     to emerge.
-
-Version 1.6.22beta03 [March 9, 2016]
   Added a common-law trademark notice and export control information
     to the LICENSE file, png.h, and the man page.
   Restored "& 0xff" in png_save_uint_16() and png_save_uint_32() that
@@ -62,7 +52,7 @@ Version 1.6.22beta03 [March 9, 2016]
   Changed PNG_INFO_cHNK and PNG_FREE_cHNK from 0xnnnn to 0xnnnnU in png.h
     (Robert C. Seacord).
   Removed dubious "#if INT_MAX" test from png.h that was added to
-    libpng-1.6.19beta02 (John Bowler).
+    libpng-1.6.19 (John Bowler).
   Add ${INCLUDES} in scripts/genout.cmake.in (Bug report by Nixon Kwok).
   Updated LICENSE to say files in the contrib directory are not
     necessarily under the libpng license, and that some makefiles have
@@ -76,44 +66,23 @@ Version 1.6.22beta03 [March 9, 2016]
     more realistic testing; the decoded data actually gets used in a
     meaningful fashion (John Bowler).
   Fixed some misleading indentation (Krishnaraj Bhat).
-
-Version 1.6.22beta04 [April 5, 2016]
   Force GCC compilation to C89 if needed (Dagobert Michelsen).
   SSE filter speed improvements for bpp=3:
     memcpy-free implementations of load3() / store3().
     call load3() only when needed at the end of a scanline.
-
-Version 1.6.22beta05 [April 27, 2016]
   Added PNG_FAST_FILTERS macro (defined as
     PNG_FILTER_NONE|PNG_FILTER_SUB|PNG_FILTER_UP).
   Various fixes for contrib/libtests/timepng.c
-  Moved INTEL-SSE code from pngpriv.h into contrib/intel/intel_sse.patch.
   Fixed typo (missing underscore) in #define PNG_READ_16_TO_8_SUPPORTED
     (Bug report by Y.Ohashik).
-
-Version 1.6.22beta06 [May 5, 2016]
-  Rebased contrib/intel_sse.patch.
   Quieted two Coverity issues in contrib/libtests/timepng.c.
   Fixed issues with scripts/genout.cmake.in (David Capello, Nixon Kwok):
     Added support to use multiple directories in ZLIBINCDIR variable,
     Fixed CMAKE_C_FLAGS with multiple values when genout is compiled on MSVC,
     Fixed pnglibconf.c compilation on OS X including the sysroot path.
-
-Version 1.6.22rc01 [May 14, 2016]
-  No changes.
-
-Version 1.6.22rc01 [May 16, 2016]
-  Removed contrib/timepng from default build; it does not build on platforms
-    that don't supply clock_gettime().
   Check for CLOCK_PROCESS_CPUTIME_ID when building /contrib/libtests/timepng.
+  Check for the presence of clock_gettime() in configure.ac and Makefile.am.
 
-Version 1.6.22rc03 [May 17, 2016]
-  Restored contrib/timepng to default build but check for the presence
-    of clock_gettime() in configure.ac and Makefile.am.
-
-Version 1.6.22rc04 [May 18, 2016]
-
-Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
 to subscribe)