Added GLK12232-25SM support with glk driver.

Fixed lots of small problems in various places.
Added new protocol commands screen_add/del_key so screens
   can request keystrokes when they are being displayed.
Lots of work on CPU GRAPH and BIG NUMBER CLOCK screens.
Fixed 'output' function in MtxOrb.c

server/widget.c

@@ -17,6 +17,7 @@ char *types[] = { "none",
 	"scroller",
 	"frame",
 	"num",
+	"keys",
 	//"",
 	NULL,
 };