Version 1.7.44 (built with libpng-1.5.14 and zlib-1.2.7)

Version 1.7.43 (built with libpng-1.5.13 and zlib-1.2.7)
  Added "remove(inname)" before "rename(outname, inname)" when using the "-ow"
    option on CYGWIN/MinGW because "rename()" does not work if the target file
    exists.
  Use the bundled "zlib.h" when PNGCRUSH_H is defined, otherwise use the
    system .

Version 1.7.42 (built with libpng-1.5.13 and zlib-1.2.7)
  Use malloc() and free() instead of png_malloc_default() and
    png_free_default().  This will be required to run with libpng-1.7.x.
  Revised the PNG_ABORT definition in pngcrush.h to work with libpng-1.7.x.
  Revised zutil.h to avoid redefining ptrdiff_t on MinGW/CYGWIN platforms.
Updated graphics/pngcrush to 1.7.44
Changes 9:
Add cjpeg -rgb1 option to create an RGB JPEG file, and insert
a simple reversible color transform into the processing which
significantly improves the compression.
The recommended command for lossless coding of RGB images is now
cjpeg -rgb1 -block 1 -arithmetic.
As said, this option improves the compression significantly, but
the files are not compatible with JPEG decoders prior to IJG v9
due to the included color transform.
The used color transform and marker signaling is compatible with
other JPEG standards (e.g., JPEG-LS part 2).
Remove the automatic de-ANSI-fication support (Automake 1.12).
Add remark for jpeg_mem_dest() in jdatadst.c.
Support files with invalid component identifiers (created by Adobe PDF).
Adapt full buffer case in jcmainct.c for use with scaled DCT.
Add type identifier for declaration of noreturn functions.
Correct argument type in format string, avoid compiler warnings.
Add missing #include directives in configuration checks, avoid
configuration errors.
Revbump after updating graphics/jpeg
Reset API depends to 8nb1 until someone argues why it should be different.
Updated graphics/jpeg to 9
Fix problem with booleans by reverting to the old definition.
Use <sys/endian.h> on BSD systems to determine endianness.  Fixes a problem
on NetBSD/arm where boost could not determine the endianness.

(patch has been submitted upstream)
Missing Makefile update commit