Correct file lookups when we are given a file within the same directory
  as the parent request.  Also pulls a bunch of notes and code that was
  set aside, we don't need this with the other optimizations introduced.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91254 13f79535-47bb-0310-9956-ffa450edef68