backport changes from 2.1:

* use the <glossary> element
* format code for better readability
* new glossary item "hash"
* add an id attribute for every anchor
* .htaccess is not a valid id, so cut the leading point


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.0.x@106821 13f79535-47bb-0310-9956-ffa450edef68