ap_get_client_block() now uses a brigade in core_request_config

instead of a brigade in core_dir_conf.  For now, getline() and
ap_get_client_block() share a brigade.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86647 13f79535-47bb-0310-9956-ffa450edef68