updated for version 7.4.428

Problem:    executable() may return a wrong result on MS-Windows.
Solution:   Change the way SearchPath() is called. (Yasuhiro Matsumoto, Ken
            Takata)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    428,
 /**/
     427,
 /**/