patch 7.4.2239

Problem:    Warning for missing declaration of skip_vimgrep_pat(). (John
            Marriott)
Solution:   Move it to another file.

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2239,
 /**/
     2238,
 /**/