Freshen up the MPE port. MPE/iX now supports dynamic loading of modules.

Submitted by:   Mark Bixby <mark_bixby@hp.com>
Reviewed by:    Martin Kraemer


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@84271 13f79535-47bb-0310-9956-ffa450edef68