fix dist target, revert POTION_VERSION, add tools/mk-release.sh

improve cross-compilation for windows, make core/syntax.c native
POTION_VERSION needs to be duplicate for the dist.mak sed script
potion mk-release backports
fix linenoise for windows (code from github.com/Choonster/lua-linenoise-windows)

add CROSS: fixes more mingw cross-compiler issues, special strip and ranlib

Fixed Conflicts:
	Makefile
	config.mak
	lib/readline/Makefile