Libpng 1.5.19 - August 21, 2014

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

  libpng-1.5.19.tar.xz (LZMA-compressed, recommended)
  libpng-1.5.19.tar.gz
  libpng-1.5.19.tar.bz2

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

  lpng1519.7z  (LZMA-compressed, recommended)
  lpng1519.zip

Other information:

  libpng-1.5.19-README.txt
  libpng-1.5.19-LICENSE.txt
  libpng-1.5.19-*.asc (armored detached GPG signatures)

Changes since the last public release (1.5.18):
 Moved redefines of png_error(), png_warning(), png_chunk_error(),
   and png_chunk_warning() from pngpriv.h to png.h to make them visible
   to libpng-calling applications.
 Fixed typos in the manual and in scripts/pnglibconf.dfa (CFLAGS -> CPPFLAGS
   and PNG_USR_CONFIG -> PNG_USER_CONFIG).
 Use "if (value != 0)" instead of "if (value)" consistently.
 Moved configuration information from the manual to the INSTALL file.
 Removed #if/#else/#endif from inside two pow() calls in pngvalid.c because
   they were handled improperly by Portland Group's PGI-14.1 - PGI-14.3
   when using its "__builtin_pow()" function.
 Silence 'unused parameter' build warnings (Cosmin).
 $(CP) is now used alongside $(RM_F).  Also, use 'copy' instead
   of 'cp' where applicable, and applied other minor makefile changes.
 Don't warn about invalid dimensions exceeding user limits.
 Fixed a typo in pngrutil.c, introduced in libpng-1.5.6, that interferes
   with "blocky" expansion of sub-8-bit interlaced PNG files (Eric Huss).
 Removed scripts/makefile.elf. It has not worked since libpng-1.5.0beta14
   due to elimination of the PNG_FUNCTION_EXPORT and PNG_DATA_EXPORT
   definitions from pngconf.h.
 Allow an easy replacement of the default pre-built configuration
   header with a custom header, via the make PNGLIBCONF_H_PREBUILT
   macro.
 Added opinion that the ECCN (Export Control Classification Number) for
   libpng is EAR99 to the README file.
 Made "ccopts" agree with "CFLAGS" in scripts/makefile.hp* and makefile.*sunu
 Added PNG_UNUSED(png_ptr) and PNG_UNUSED(val) in png_longjmp() (Cosmin).

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