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

shared/debug.h

@@ -1,6 +1,8 @@
 #ifndef DEBUG_H
 #define DEBUG_H
 
+#include "../config.h"
+
 #ifdef DEBUG
 
 #define debug printf