Changes applied to the libpng-1.6.46/ tree as obtained from:
	https://sourceforge.net/projects/libpng/files/libpng16/1.6.46/

Copied:
	scripts/pnglibconf.h.prebuilt -> pnglibconf.h

Removed:
	.github (dir)
	.appveyor.yml
	.cmake-format.yaml
	.editorconfig
	.editorconfig-checker.json
	.gitignore
	.travis.yml
	.yamllint.yml
	Makefile.in
	aclocal.m4
	compile
	config.guess
	config.sub
	configure
	depcomp
	install-sh
	ltmain.sh
	missing
	test-driver
