patch 7.4.886

Problem:    Windows7: Switching screen buffer causes flicker when using
            system().
Solution:   Instead of actually switching screen buffer, duplicate the handle.
            (Yasuhiro Matsumoto)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    886,
 /**/
     885,
 /**/