Upgrade libpng to version 1.2.40

This commit contains a clean copy of the libpng source distribution.
The Qt patches will follow in a separate commit.

1 files changed, 25 insertions, 29 deletions

diff --git a/src/3rdparty/libpng/ANNOUNCE b/src/3rdparty/libpng/ANNOUNCE
index 5580fb8..b73bbb5 100644
--- a/src/3rdparty/libpng/ANNOUNCE
+++ b/src/3rdparty/libpng/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.2.29 - May 8, 2008
+Libpng 1.2.40 - September 10, 2009
 
 This is a public release of libpng, intended for use in production codes.
 
@@ -8,53 +8,49 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   libpng-1.2.29.tar.gz
-   libpng-1.2.29.tar.lzma
-     (Get the lzma codec from <http://tukaani.org/lzma>).
-   libpng-1.2.29.tar.bz2
+   libpng-1.2.40.tar.xz (LZMA-compressed, recommended)
+   libpng-1.2.40.tar.gz
+   libpng-1.2.40.tar.bz2
 
 Source files with LF line endings (for Unix/Linux) without the
 "configure" script
 
-   libpng-1.2.29-no-config.tar.gz
-   libpng-1.2.29-no-config.tar.lzma
-   libpng-1.2.29-no-config.tar.bz2
+   libpng-1.2.40-no-config.tar.xz (LZMA-compressed, recommended)
+   libpng-1.2.40-no-config.tar.gz
+   libpng-1.2.40-no-config.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lpng1229.zip
-   lpng1229.7z
-   lpng1229.tar.bz2
+   lpng1240.zip
+   lpng1240.7z
+   lpng1240.tar.bz2
 
 Project files
 
-   libpng-1.2.29-project-netware.zip
-   libpng-1.2.29-project-wince.zip
+   libpng-1.2.40-project-netware.zip
+   libpng-1.2.40-project-wince.zip
 
 Other information:
 
-   libpng-1.2.29-README.txt
-   libpng-1.2.29-KNOWNBUGS.txt
-   libpng-1.2.29-LICENSE.txt
-   libpng-1.2.29-Y2K-compliance.txt
-   libpng-1.2.29-[previous version]-diff.txt
+   libpng-1.2.40-README.txt
+   libpng-1.2.40-KNOWNBUGS.txt
+   libpng-1.2.40-LICENSE.txt
+   libpng-1.2.40-Y2K-compliance.txt
+   libpng-1.2.40-[previous version]-diff.txt
 
-Changes since the last public release (1.2.28):
+Changes since the last public release (1.2.39):
 
-version 1.2.29 [May 8, 2008]
+version 1.2.40 [September 10, 2009]
 
-  Removed some stray *.diff and *.orig files
-  Reverted Makefile.in, aclocal.m4, and configure to the libpng-1.2.26
-    versions.
-  Added --force to autogen libtoolize options and --force-missing to
-    automake options.
-  Changed $(ECHO) to echo in Makefile.am and Makefile.in
-  Updated all configure files to autoconf-2.62
-  #ifdef out pnggcrd.c code if using MSC_VER
+  Removed an extra png_debug() recently added to png_write_find_filter().
+  Fixed incorrect #ifdef in pngset.c regarding unknown chunk support.
+  Various bugfixes and improvements to CMakeLists.txt (Philip Lowman)
 
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