Provide apr_pool_t arg to register_hooks, since anything they do in that
  step -must- be done with a pool that will not outlive the cmd pool, from
  which they may have been dynamically loaded.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@87697 13f79535-47bb-0310-9956-ffa450edef68