Update bundled libpng from version 1.5.10 to 1.6.16.

libpng 1.6.16 is the current stable version, 1.6.17 is in development (rc..).


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10625 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 18 insertions, 41 deletions

diff --git a/png/ANNOUNCE b/png/ANNOUNCE
index dbc2ed173..c514daf4f 100644
--- a/png/ANNOUNCE
+++ b/png/ANNOUNCE
@@ -1,5 +1,4 @@
-
-Libpng 1.5.10 - March 29, 2012
+Libpng 1.6.16 - December 22, 2014
 
 This is a public release of libpng, intended for use in production codes.
 
@@ -8,52 +7,30 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   libpng-1.5.10.tar.xz (LZMA-compressed, recommended)
-   libpng-1.5.10.tar.gz
-   libpng-1.5.10.tar.bz2
+   libpng-1.6.16.tar.xz (LZMA-compressed, recommended)
+   libpng-1.6.16.tar.gz
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lpng1510.7z  (LZMA-compressed, recommended)
-   lpng1510.zip
+   lpng1616.7z  (LZMA-compressed, recommended)
+   lpng1616.zip
 
 Other information:
 
-   libpng-1.5.10-README.txt
-   libpng-1.5.10-LICENSE.txt
-
-Changes since the last public release (1.5.9):
-
-  Removed two useless #ifdef directives from pngread.c and one from pngrutil.c
-  Always put the CMAKE_LIBRARY in "lib" (removed special WIN32 case).
-  Removed empty vstudio/pngstest directory (Clifford Yapp).
-  Eliminated redundant png_push_read_tEXt|zTXt|iTXt|unknown code from
-    pngpread.c and use the sequential png_handle_tEXt, etc., in pngrutil.c;
-    now that png_ptr->buffer is inaccessible to applications, the special
-    handling is no longer useful.
-  Fixed bug with png_handle_hIST with odd chunk length (Frank Busse).
-  Added PNG_SAFE_LIMITS feature to pnglibconf.dfa and code in pngconf.h
-    to reset the user limits to safe ones if PNG_SAFE_LIMITS is defined.
-    To enable, use "CPPFLAGS=-DPNG_SAFE_LIMITS_SUPPORTED" on the configure
-    command or put "#define PNG_SAFE_LIMITS_SUPPORTED" in pnglibconf.h.
-  Revised the SAFE_LIMITS feature to be the same as the feature in libpng16.
-  Added information about the new limits in the manual.
-  Updated Makefile.in
-  Removed unused "current_text" members of png_struct and the png_free()
-    of png_ptr->current_text from pngread.c
-  Fixed PNG_LIBPNG_BUILD_BASE_TYPE definition.
-  Fixed CMF optimization of non-IDAT compressed chunks, which was added at
-    libpng-1.5.4.  It sometimes produced too small of a window.
-  Reject all iCCP chunks after the first, even if the first one is invalid.
-  Added palette-index checking. Issue a png_benign_error() if an invalid
-    index is found.
-  Revised example.c to put text strings in a temporary character array
-    instead of directly assigning string constants to png_textp members.
-    This avoids compiler warnings when -Wwrite-strings is enabled.
-  Prevent PNG_EXPAND+PNG_SHIFT doing the shift twice.
-  Revised png_set_text_2() to avoid potential memory corruption (fixes
-    CVE-2011-3048).
+   libpng-1.6.16-README.txt
+   libpng-1.6.16-LICENSE.txt
+   libpng-1.6.16-*.asc (armored detached GPG signatures)
+
+Changes since the last public release (1.6.15):
+  Added ".align 2" to arm/filter_neon.S to support old GAS assemblers that
+    don't do alignment correctly.
+  Revised Makefile.am and scripts/*.dfn to work with MinGW/MSYS;
+    renamed scripts/*.dfn to scripts/*.c (Bob Friesenhahn and John Bowler).
+  Quiet a "comparison always true" warning in pngstest.c (John Bowler).
+  Restored a test on width that was removed from png.c at libpng-1.6.9
+    (Bug report by Alex Eubanks).
+  Fixed an overflow in png_combine_row with very wide interlaced images.
 
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