Sorry, second pass, working on legibility.  This patch introduces the
  fill_in_sub_req_vars function to propogate the rnew values, but doesn't
  yet hook it in.  Note that there are two discrepancies, apparently
  pretty bad ones, that have been moved after the 'common code' so the
  next patch becomes pretty simple.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@89441 13f79535-47bb-0310-9956-ffa450edef68