required changes to include the obsolete stuff.

- new entries in en.xml
- sidebar for moduleindex
- new <hint> element for modulesynopsis
- status attribute for <directive> and <module> in order to
  create correct links (status="obsolete" inserts an 'obs_'
  before the module file name in the href)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@97234 13f79535-47bb-0310-9956-ffa450edef68