updated for version 7.3.719

Problem:    Cannot run new version of cproto, it fails on missing include
            files.
Solution:   Add lots of #ifndef PROTO

src/gui_w48.c

@@ -25,6 +25,10 @@
 #ifdef DEBUG
 # include <tchar.h>
 #endif
+
+/* cproto fails on missing include files */
+#ifndef PROTO
+
 #ifndef __MINGW32__
 # include <shellapi.h>
 #endif
@@ -44,6 +48,8 @@
 # include "glbl_ime.h"
 #endif
 
+#endif /* PROTO */
+
 #ifdef FEAT_MENU
 # define MENUHINTS		/* show menu hints in command line */
 #endif