Do a better job of cleaning up (plug memory leaks) and handling aborted

cache updates. We really need a better way to allocate cache_objects.
Making WAY too many malloc/calloc calls...


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93775 13f79535-47bb-0310-9956-ffa450edef68