Revise keycode encoding.

Gather APROP and CFENCE conditional code.

execute.h

@@ -1,5 +1,20 @@
-extern int gasave ;		/* global ASAVE size            */
-extern int gacount ;		/* count until next ASAVE       */
+/* execute.h -- */
 
-int execute( int c, int f, int n) ;
+#define	CFENCE	1  /* fence matching in CMODE */
+
+
+#include "names.h"		/* key code */
+
+
+extern int gasave ;		/* global ASAVE size            */
+extern int gacount ;	/* count until next ASAVE       */
+
+
+int execute( unsigned keycode, int f, int n) ;
 void kbd_loop( void) ;
+
+#if CFENCE
+BINDABLE( getfence) ;
+#endif
+
+/* end of execute.h */