MAME 0.268 SL/CHD sooner requests

As usual because RR does not provide SL

Use his thread for added SL/CHD stuff (from official 0.267 to the next official release 0.268)

Don't search/post here stuff that is already added to 0.267 or earlier!

https://mega.nz/folder/vE01WJ5J#3aWxNWuyVub_vu76-B39mw