Reimplement ap_some_auth_required as an optional function since the data has...

Reimplement ap_some_auth_required as an optional function since the data has moved to mod_authz_host yet it is still needed by the request handler

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/authz-dev@351547 13f79535-47bb-0310-9956-ffa450edef68