[libpng15] Bump version to libpng-1.5.16beta02
[libpng15] Imported from libpng-1.5.16beta02.tar
[libpng15] Bump version to 1.5.16beta03
[libpng15] Test for 'arm*' not just 'arm' in the host_cpu configure variable.
[libpng15] Imported from libpng-1.5.16beta03.tar
[libpng15] Bump version to 1.5.16beta04
[libpng15] Added demo of how to deal with unknown chunk location

to the man page.
[libpng15] Imported from libpng-1.5.16beta04.tar
[libpng15] Bump version to libpng-1.5.16beta05.tar
[libpng16] Choose to use our calculated windowBits or the zlib header setting

via the benign-errors setting.  If benign errors are allowed, then ignore
the windowBits setting in the zlib header.
[libpng16] Choose to use windowBits==15 or the zlib header setting via the

benign-errors setting.  If benign errors are allowed, then ignore
the windowBits setting in the zlib header.
Zlib-1.2.8 and earlier don't allow us to decrease the windowBits, so
undid the improvement in beta04.
[libpng16] Check for EOF in contrib/pngminus/pnm2png.c (Paul Stewart).
[libpng16] Ignore "#" delimited comments in input file to pnm2png.c.
[libpng15] Reverted patches committed to the wrong branch.
[libpng15] Check for EOF in contrib/pngminus/pnm2png.c (Paul Stewart).

Ignore "#" delimited comments in input file to pnm2png.c.
[libpng15] Updated contrib/pngminus/pnm2png.c (Paul Stewart):

Fixed whitespace handling
Added a call to png_set_packing()
Initialize dimension values so if sscanf fails at least we have known
invalid values.
[libpng15] Imported from libpng-1.5.16beta05.tar
[libpng15] Allow contrib/pnminus/pnm2png.c to compile without WRITE_INVERT

and WRITE_PACK supported (writes error message that it can't read P1 or P4
PBM files).
[libpng15] Revised contrib/pngminim/*/makefile to separate CPPFLAGS and

CPFLAGS, and to generate pnglibconf.h with the right zlib header files.
[libpng15] Ported libpng-1.6.3beta06/contrib/pngminus/pnm2png.c changes

to use unsigned long, not png_uint_32 arguments to sscanf().