Added UART and Mouse to Atomic Top Papilio

Change-Id: Ia95b1b48f5c0a772d5ceb5b77888e3d50e432f09
Added vga80 OSWRCH handler to fpgautils - version now 0.20

Change-Id: Iaf2266feb9e43b92bf98e6d89fd300a8d0117aba