Add a new parameter to the quick_handler hook to instruct

quick handlers to optionally do a lookup rather than actually
serve content. This is the first of several changes required fix
several problems with how quick handlers work with subrequests.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@94240 13f79535-47bb-0310-9956-ffa450edef68