Log message:
regen for targz change

Log message:
Update to 1.5.3beta06:
Version 1.5.3beta06 [May 8, 2011]
  Removed the -D_ALL_SOURCE from definitions for AIX in CMakeLists.txt
  Implemented premultiplied alpha support: png_set_alpha_mode API

Log message:
Switch to use default EXTRACT_SUFX for distfile, .tar.gz is the only long term
provided archive for libpng beta release.

Log message:
Changes 1.5.3beta05:
* Added the "_POSIX_SOURCE" feature test macro to ensure libpng sees the
  correct API. _POSIX_SOURCE is defined in pngpriv.h, pngtest.c and
  pngvalid.c to ensure that POSIX conformant systems disable non-POSIX APIs.
* Removed png_snprintf and added formatted warning messages.  This change adds
  internal APIs to allow png_warning messages to have parameters without
  requiring the host OS to implement snprintf.  As a side effect the
  dependency of the tIME-supporting RFC1132 code on stdio is removed and
  PNG_NO_WARNINGS does actually work now.
* Added PNG_WRITE_OPTIMIZE_CMF_SUPPORTED macro to make the zlib "CMF" byte
  optimization configureable.
* IDAT compression failed if preceded by a compressed text chunk (bug
  introduced in libpng-1.5.3beta01-02).  This was because the attempt to
  reset the zlib stream in png_write_IDAT happened after the first IDAT
  chunk had been deflated - much too late.  In this change internal
  functions were added to claim/release the z_stream and, hopefully, make
  the code more robust.  Also deflateEnd checking is added - previously
  libpng would ignore an error at the end of the stream.

Log message:
Update to 1.5.3beta04 to fix a regression reported on tech-pkg (see beta03,
last entry).

Version 1.5.3beta01 [April 1, 2011]
  Re-initialize the zlib compressor before compressing non-IDAT chunks.
  Added API functions to set parameters for zlib compression of non-IDAT
    chunks.

Version 1.5.3beta02 [April 3, 2011]
  Updated scripts/symbols.def with new API functions.
  Only compile the new zlib re-initializing code when text or iCCP is
    supported, using PNG_WRITE_COMPRESSED_TEXT_SUPPORTED macro.
  Improved the optimization of the zlib CMF byte (see libpng-1.2.6beta03).
  Optimize the zlib CMF byte in non-IDAT compressed chunks

Version 1.5.3beta03 [April 16, 2011]
  Fixed gcc -ansi -pedantic compile. A strict ANSI system does not have
    snprintf, and the "__STRICT_ANSI__" detects that condition more \ 
reliably
    than __STDC__ (John Bowler).
  Removed the PNG_PTR_NORETURN attribute because it too dangerous. It tells
    the compiler that a user supplied callback (the error handler) does not
    return, yet there is no guarantee in practice that the application code
    will correctly implement the error handler because the compiler only
    issues a warning if there is a mistake (John Bowler).
  Removed the no-longer-used PNG_DEPSTRUCT macro.
  Updated the zlib version to 1.2.5 in the VStudio project.
  Fixed 64-bit builds where png_uint_32 is smaller than png_size_t in
    pngwutil.c (John Bowler).
  Fixed bug with stripping the filler or alpha channel when writing, that
    was introduced in libpng-1.5.2beta01 (bug report by Andrew Church).

Version 1.5.3beta04 [April 27, 2011]
  Updated pngtest.png with the new zlib CMF optimization.
  Cleaned up conditional compilation code and of background/gamma handling
    Internal changes only except a new option to avoid compiling the
    png_build_grayscale_palette API (which is not used at all internally.)
    The main change is to move the transform tests (READ_TRANSFORMS,
    WRITE_TRANSFORMS) up one level to the caller of the APIs.  This avoids
    calls to spurious functions if all transforms are disabled and slightly
    simplifies those functions.  Pngvalid modified to handle this.
    A minor change is to stop the strip_16 and expand_16 interfaces from
    disabling each other; this allows the future alpha premultiplication
    code to use 16-bit intermediate values while still producing 8-bit output.
    png_do_background and png_do_gamma have been simplified to take a single
    pointer to the png_struct rather than pointers to every item required
    from the png_struct. This makes no practical difference to the internal
    code.
  A serious bug in the pngvalid internal routine 'standard_display_init' has
    been fixed - this failed to initialize the red channel and accidentally
    initialized the alpha channel twice.
  Changed png_struct jmp_buf member name from png_jmpbuf to tmp_jmpbuf to
    avoid a clash with the png_jmpbuf macro on some platforms.

Log message:
Update to 1.5.2:

Version 1.5.2beta01 [February 13, 2011]
  More -Wshadow fixes for older gcc compilers.  Older gcc versions apparently
    check formal parameters names in function declarations (as well as
    definitions) to see if they match a name in the global namespace.
  Revised PNG_EXPORTA macro to not use an empty parameter, to accommodate the
    old VisualC++ preprocessor.
  Turned on interlace handling in png_read_png().
  Fixed gcc pendantic warnings.
  Handle longjmp in Cygwin.
  Fixed png_get_current_row_number() in the interlaced case.
  Cleaned up ALPHA flags and transformations.
  Implemented expansion to 16 bits.

Version 1.5.2beta02 [February 19, 2011]
  Fixed mistake in the descriptions of user read_transform and write_transform
    function prototypes in the manual.  The row_info struct is png_row_infop.
  Reverted png_get_current_row_number() to previous (1.5.2beta01) behavior.
  Corrected png_get_current_row_number documentation
  Fixed the read/write row callback documentation.
    This documents the current behavior, where the callback is called after
    every row with information pertaining to the next row.

Version 1.5.2beta03 [March 3, 2011]
  Fixed scripts/makefile.vcwin32
  Updated contrib/pngsuite/README to add the word "modify".
  Define PNG_ALLOCATED to blank when _MSC_VER<1300.

Version 1.5.2rc01 [March 19, 2011]
  Define remaining attributes to blank when MSC_VER<1300.
  ifdef out mask arrays in pngread.c when interlacing is not supported.

Version 1.5.2rc02 [March 22, 2011]
  Added a hint to try CPP=/bin/cpp if "cpp -E" fails in \ 
scripts/pnglibconf.mak
    and in contrib/pngminim/*/makefile, eg., on SunOS 5.10, and removed \ 
"strip"
    from the makefiles.
  Fixed a bug (present since libpng-1.0.7) that makes png_handle_sPLT() fail
    to compile when PNG_NO_POINTER_INDEXING is defined (Chubanov Kirill)

Version 1.5.2rc03 [March 24, 2011]
  Don't include standard header files in png.h while building the symbol table,
    to avoid cpp failure on SunOS (introduced PNG_BUILDING_SYMBOL_TABLE macro).

Version 1.5.2 [March 31, 2011]

Log message:
Fix building with Clang

Log message:
Update to 1.5.1:

Version 1.5.1beta10 [January 27, 2010]
  Fixed incorrect examples of callback prototypes in the manual, that were
    introduced in libpng-1.0.0.
  In addition the order of the png_get_uint macros with respect to the
    relevant function definitions has been reversed.  This helps the
    preprocessing of the symbol files be more robust.  Furthermore, the
    symbol file preprocessing now uses -DPNG_NO_USE_READ_MACROS even when
    the library may actually be built with PNG_USE_READ_MACROS; this stops
    the read macros interfering with the symbol file format.
  Made the manual, synopses, and function prototypes use the function
    argument names file_gamma, int_file_gamma, and srgb_intent consistently.

Version 1.5.1beta11 [January 28, 2011]
  Changed PNG_UNUSED from "param=param;" to "{if(param){}}".
  Corrected local variable type in new API png_process_data_skip()
    The type was self-evidently incorrect but only causes problems on 64 bit
    architectures.
  Added transform tests to pngvalid and simplified the arguments.

Version 1.5.1rc01 [January 29, 2011]
  No changes.

Version 1.5.1rc02 [January 31, 2011]
  Added a request in the manual that applications do not use "png_" or
    "PNG_" to begin any of their own symbols.
  Changed PNG_UNUSED to "(void)param;" and updated the commentary in \ 
pngpriv.h

Version 1.5.1 [February 3, 2011]
  No changes.

Log message:
Changes 1.5.1beta09:
Enhanced pngvalid, corrected an error in gray_to_rgb, corrected doc error.
  pngvalid contains tests of transforms, which tests are currently disabled
  because they are incompletely tested.  gray_to_rgb was failing to expand
  the bit depth for smaller bit depth images; this seems to be a long
  standing error and resulted, apparently, in invalid output.  The
  documentation did not accurately describe what libpng really does when
  converting RGB to gray.

Log message:
Update to 1.5.1beta08. Integrates a better version of patch-ac and tries
to fix the Solaris build problem reported in PR 44428.

Version 1.5.1beta07 [January 22, 2011]
  In the manual, describe the png_get_IHDR() arguments in the correct order.
  Added const_png_structp and const_png_infop types, and used them in
    prototypes for most png_get_*() functions.

Version 1.5.1beta08 [January 23, 2011]
  Added png_get_io_chunk_type() and deprecated png_get_io_chunk_name()
  Added synopses for the IO_STATE functions and other missing synopses
    to the manual. Removed the synopses from libpngpf.3 because they
    were out of date and no longer useful.  Better information can be
    obtained by reading the prototypes and comments in pngpriv.h
  Attempted to fix cpp on Solaris with S. Studio 12 cc, fix build
    Added a make macro DFNCPP that is a CPP that will accept the tokens in
    a .dfn file and adds configure stuff to test for such a CPP.  ./configure
    should fail if one is not available.
  Corrected const_png_ in png.h to png_const_ to avoid polluting the namespace.
  Added png_get_current_row_number and png_get_current_pass_number for the
    benefit of the user transform callback.
  Added png_process_data_pause and png_process_data_skip for the benefit of
    progressive readers that need to stop data processing or want to optimize
    skipping of unread data (e.g., if the reader marks a chunk to be skipped.)