Makefile: Added rules for controlling Multi
Makefile: Added rules for controlling Multi

This will come in handy when writing update rules.

morkt/vndb,morkt/vndb,christian-roggia/vndb,christian-roggia/vndb,morkt/vndb,erengy/vndb,morkt/vndb,erengy/vndb,christian-roggia/vndb,erengy/vndb,morkt/vndb