(re-)add the obsolete module docs.

This commit is a base for some discussion and better work on the
documents, feel free to add or change the files
I stuck with mod_access for now, since there's no decision about yet.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@97235 13f79535-47bb-0310-9956-ffa450edef68