The rewrite-args hook isn't available to MPM DSOs. Piggy-back on the

linked-in mod_unixd.c to handle that.

(The set of MPMs modified is the same set for which mod_unixd is enabled,
which is approximately equivalent to the set of Unix MPMs which anybody has
tried to maintain in recent memory.)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@758278 13f79535-47bb-0310-9956-ffa450edef68