updated for version 7.3.1157

Problem:    New regexp engine fails on "\(\<command\)\@<=.*"
Solution:   Fix rule for postponing match.  Further tune estimating whether
            postponing works better.  Add test.

src/version.c

@@ -728,6 +728,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1157,
 /**/
     1156,
 /**/