- break down the beast into smaller pieces and (try to) make it better readable.

- add license
- fix a small bug, where document sections were not indexed, when a
  translated document was in html format only (affected Japanese only)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/APACHE_2_0_BRANCH@99504 13f79535-47bb-0310-9956-ffa450edef68