*) mod_setenvif: Fix the regex optimizer, which under circumstances
   treated the supplied regex as literal string. PR 24219.

Submitted by: Andr�� Malo
Reviewed by: jerenkrantz, trawick, rederpj


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/APACHE_2_0_BRANCH@102516 13f79535-47bb-0310-9956-ffa450edef68