applied patch 890642: wxRE_ADVANCED flag and docs

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@25870 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

setup.h_vms

@@ -191,6 +191,12 @@
  * Use regex support
  */
 #define wxUSE_REGEX 0
+/*
+ * The built-in regex supports advanced REs in additional to POSIX's basic
+ * and extended. Your system regex probably won't support this, and in this
+ * case WX_NO_REGEX_ADVANCED should be defined.
+ */
+#undef WX_NO_REGEX_ADVANCED
 /*
  * Use XML support
  */