[Feature Request] Expose DRC,DRC_use_c options for mobile user.

[lim2222]

As how the Mame4droid offered,this will significantly increase speed by diable DRC in mobile device like android especially for heavy game like sega stv.

[grant2258]

There where issues a while back all the drc was disabled. That could be reviewed though but only 64 bit builds are supported now in mame afaik unless that has changed its a simple editing of the makefile options