Eliminate proxy: (and all other 'special') processing from the
  ap_directory_walk() phase.  Modules that want to use special
  walk logic should refer to the mod_proxy map_to_location example,
  with it's proxy_walk and proxysection implementation.  This makes
  either directory_walk flavor much more legible, since that phase
  only runs against real <Directory > blocks.

  On a technical note, this patch also forces the Directory to be
  canonical (unless it is "/" or a regex.)  It also allows us to
  be more explicit when declaring <Directory > block errors.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@90684 13f79535-47bb-0310-9956-ffa450edef68