I left the old xMame version in place as this is quite a big update, and some
people might like to still use the old version for some reasons (compatibility
with old rom files etc.). The new version sadly does not make Neogeo-only or
cps-only versions possible any longer, so you need to launch neogeo/cps games
with the full Mame exe. Mess is not yet updated to the new version, will look
after it later.