[libpng15] Warn about the incorrect runtime library setting for VS2010

debug DLL builds.

ANNOUNCE

@@ -1,5 +1,5 @@
 
-Libpng 1.5.14beta01 - September 27, 2012
+Libpng 1.5.14beta01 - September 29, 2012
 
 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.
@@ -24,33 +24,10 @@ Other information:
    1.5.14beta01-README.txt
    1.5.14beta01-LICENSE.txt
 
-Changes since the last public release (1.5.12):
+Changes since the last public release (1.5.13):
 
-Version 1.5.13beta01 [August 8, 2012]
-  Do not compile PNG_DEPRECATED, PNG_ALLOC and PNG_PRIVATE when __GNUC__ < 3.
-  Removed references to png_zalloc() and png_zfree() from the manual.
-  Revised PNG_FP_EXPORT and PNG_FIXED_EXPORT macros to avoid generating
-    lone semicolons (patch ported from libpng-1.6.0beta11).
-
-Version 1.5.13beta02 [September 10, 2012]
-  Corrected handling of the image array and the row_pointers array in example.c
-  When png_set_filler is used to strip a filler channel during write, the
-    code prior to 1.5 would ignore the case where the output required an
-    alpha channel or when the output was a palettized PNG.  In libpng-1.5 the
-    ignorance was lost and libpng proceeded to strip the channel resulting
-    in a bad (potential memory overwrite) failure later.  This reverts
-    the behavior to the pre-1.5 state but issues a warning. libpng-1.6 is
-    expected to issue an error on the erroneous png_set_filler call.
-  Use png_memset() consistently (pngmem.c contained some bare "memset" calls).
-
-Version 1.5.13rc01 [September 17, 2012]
-  No changes.
-
-Version 1.5.13 [September 27, 2012]
-  No changes.
-
-Version 1.5.14beta01 [September 27, 2012]
   Added -DZ_SOLO to contrib/pngminim/*/makefile to work with zlib-1.2.7
+  Warn about the incorrect runtime library setting for VS2010 debug DLL builds.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
 (subscription required; visit

CHANGES

@@ -3919,8 +3919,9 @@ Version 1.5.13rc01 [September 17, 2012]
 Version 1.5.13 [September 27, 2012]
   No changes.
 
-Version 1.5.14beta01 [September 27, 2012]
+Version 1.5.14beta01 [September 29, 2012]
   Added -DZ_SOLO to contrib/pngminim/*/makefile to work with zlib-1.2.7
+  Warn about the incorrect runtime library setting for VS2010 debug DLL builds.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit

projects/vstudio/WARNING

@@ -0,0 +1,23 @@
+WARNING
+=======
+Libpng 1.5 erroneously uses /MD when building debug DLL versions of libpng.
+It should use /MDd - you can change this under properties\C/C++\Code
+Generation\Runtime Library if you need to use the debug runtime for debug
+builds.  This will be changed in libpng 1.6 but is currently retained for
+compatibility with older libpng 1.5 releases.
+
+The runtime library settings for each build are as follows:
+
+           Release        Debug
+DLL         /MD            /MD
+Library     /MT            /MTd
+
+The Visual Studio 2010 defaults for a Win32 DLL or Static Library project are
+as follows:
+
+                 Release     Debug
+DLL               /MD         /MDd
+Static Library    /MD         /MDd
+
+Notice that by default static library builds use the DLL runtime, not the
+static library runtime.

projects/vstudio/readme.txt

@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.5.14beta01 - September 27, 2012
+libpng version 1.5.14beta01 - September 29, 2012
 
 Copyright (c) 1998-2010 Glenn Randers-Pehrson
 
@@ -13,6 +13,14 @@ This directory  contains support for building libpng under MicroSoft
 VisualStudio 2010.  It may also work under later versions of VisualStudio.
 You should be familiar with VisualStudio before using this directory.
 
+WARNING
+=======
+Libpng 1.5 erroneously uses /MD when building debug DLL versions of libpng.
+It should use /MDd - you can change this under properties\C/C++\Code
+Generation\Runtime Library if you need to use the debug runtime for debug
+builds.  This will be changed in libpng 1.6 but is currently retained for
+compatibility with older libpng 1.5 releases.
+
 Initial preparations
 ====================
 You must enter some information in zlib.props before attempting to build

projects/vstudio/zlib.props

@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.5.14beta01 - September 27, 2012
+ * libpng version 1.5.14beta01 - September 29, 2012
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *