updated for version 7.3.1039
Problem:    New regexp engine does not support \%23c, \%<23c and the like.
Solution:   Implement them. (partly by Yasuhiro Matsumoto)
diff --git a/src/regexp.h b/src/regexp.h
index f8ff096..69075b5 100644
--- a/src/regexp.h
+++ b/src/regexp.h
@@ -72,6 +72,7 @@
     int			id;
     int			lastlist;
     int			negated;
+    int			val;
 };
 
 /*