do the "get resource" via a hook rather than through the repository hook

    structure. once the resource is retrieved, then we have the relevant
    repository hooks and can dispatch through those.
some additional tweaks to use lockdb->hooks rather than fetching them


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@85786 13f79535-47bb-0310-9956-ffa450edef68