Convert the sitemap to XML. (Well, I cheated a little -- I just shoved

the whole thing in <summary>.)

Also add entries for the .htaccess tutorial, public_html tutorial,
mod_auth_ldap, and mod_ldap.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@96694 13f79535-47bb-0310-9956-ffa450edef68