Fix for mod_include's parsing of "/regexp/" expressions in

<!--#if directives
Submitted by:	Julius Gawlas <julius_gawlas@hp.com>
Reviewed by:	Brian Pane


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@95277 13f79535-47bb-0310-9956-ffa450edef68