New global variable. (KdProcessArgument): Set it to TRUE on -nozap switch.

(KdUseMsg): Add help for -nozap and -rgba switches.
Declare.
Honour dontZap flag.

hw/kdrive/src/kinput.c

@@ -1209,7 +1209,8 @@ KdCheckSpecialKeys(xEvent *xE)
 	 * Set the dispatch exception flag so the server will terminate the
 	 * next time through the dispatch loop.
 	 */
-	dispatchException |= DE_TERMINATE;
+	if (kdDontZap == FALSE)
+	    dispatchException |= DE_TERMINATE;
 	break;
     }
 }