Protect us from this dirty hack that gets SysV Sem working again

on mod_rewrite. This, along with the original usage of a unix-only
function in mod_rewrite, is a temporary stopgap measure designed only
to workaround limitations in APR's handling of permission attributes.
It shall be removed as soon as that interface is improved.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@94972 13f79535-47bb-0310-9956-ffa450edef68