fix bug #128401 affecting regexp quantifiers Daniel

* config.h.in configure.in xmlregexp.c: fix bug #128401 affecting
  regexp quantifiers
Daniel
diff --git a/configure.in b/configure.in
index edfd418..fd6ac34 100644
--- a/configure.in
+++ b/configure.in
@@ -111,6 +111,7 @@
 AC_CHECK_HEADERS([ieeefp.h])
 AC_CHECK_HEADERS([nan.h])
 AC_CHECK_HEADERS([math.h])
+AC_CHECK_HEADERS([limits.h])
 AC_CHECK_HEADERS([fp_class.h])
 AC_CHECK_HEADERS([float.h])
 AC_CHECK_HEADERS([stdlib.h])