patch 7.4.1535

Problem:    The feedkeys test has a one second delay.
Solution:   Avoid need_wait_return() to delay. (Hirohito Higashi)

src/version.c

@@ -743,6 +743,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1535,
 /**/
     1534,
 /**/