Back out the suexec change to mod_rewrite.c. It now builds again.

(No, it wasn't a simple issue to get the suexec patch working.)

The suexec support doesn't apply to the external mapping process,
which is not related to any particular request.  Instead, [IMHO]
the external mapping process should switch to the configured user/group
that the daemon processes switch to.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86729 13f79535-47bb-0310-9956-ffa450edef68