Added Function keys: Fx, Shift+Fx, Cmd+Fx

Changed 12 F keys:  SHIFT+1(S RROO) to act as Shift+F1.
Added 12 keys:  NUM+1(N RROO) to act as F1.
Added 12 keys:  NUM+ALT+1(NA RROO) to act as Cmd+F1.