Remove the nroff httpd man page and put in an xml one in the manual.

At the same time, update with some new args.  More review of
this would be good.

Reviewed by: Astrid Kessler, Erik Abele, Andr� Malo, Rich Bowen


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@97517 13f79535-47bb-0310-9956-ffa450edef68