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/render.c

@@ -422,7 +422,8 @@ draw_frame (LL * list, char fscroll, int left, int top, int right, int bottom, i
 			}
 			break;
 		case WID_NUM:				  // FIXME: doesn't work in frames...
-			if ((w->x > 0) && (w->y >= 0) && (w->y <= 9)) {
+			// NOTE: y=10 means COLON (:)
+			if ((w->x > 0) && (w->y >= 0) && (w->y <= 10)) {
 				if (reset) {
 					lcd.init_num ();
 					reset = 0;