Complete callwith implementation for multis
Complete callwith implementation for multis

Also a tentative lastcall implementation, however this likely needs a
closer look.

rakudo/rakudo,MasterDuke17/rakudo,labster/rakudo,salortiz/rakudo,salortiz/rakudo,MasterDuke17/rakudo,labster/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,salortiz/rakudo,labster/rakudo,labster/rakudo,salortiz/rakudo,salortiz/rakudo,tbrowder/rakudo,rakudo/rakudo,salortiz/rakudo,tbrowder/rakudo,rakudo/rakudo,rakudo/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,tbrowder/rakudo,labster/rakudo,rakudo/rakudo,labster/rakudo,rakudo/rakudo,MasterDuke17/rakudo,MasterDuke17/rakudo,tbrowder/rakudo