Add gcode.cpp, motion.*, queue.* - Apply to some G-codes.

Marlin/src/gcode/control/M999.h

@@ -20,6 +20,8 @@
  *
  */
 
+#include "../queue.h"
+
 /**
  * M999: Restart after being stopped
  *
@@ -37,5 +39,5 @@ void gcode_M999() {
   if (parser.boolval('S')) return;
 
   // gcode_LastN = Stopped_gcode_LastN;
-  FlushSerialRequestResend();
+  flush_and_request_resend();
 }