Changes applied to the libpng-1.6.37/ tree as obtained from: https://sourceforge.net/projects/libpng/files/libpng16/1.6.37/ Copied: scripts/pnglibconf.h.prebuilt -> pnglibconf.h Removed: Makefile.in aclocal.m4 compile config.guess config.sub configure depcomp install-sh ltmain.sh missing test-driver