[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().
[libpng15] Imported from libpng-1.5.15beta06.tar
[libpng15] Imported from libpng-1.5.16beta06.tar
[libpng15] Bump version to 1.5.16beta07
[libpng15] Imported from libpng-1.5.16rc01.tar