Since the mod_mime patch was applied, here is the rest of the patch to
  introduce the ForceType and SetHandler [absolute references] directly
  into the very top of the fixups phase.  This means these will always
  override _any_ mime module, not just mod_mime.  Ergo, other mime modules
  can continue to set charset, encodings, etc.  Since these are globals,
  they belong in the core.

  This highlights a very serious drawback to the type_checker hook.  By
  using run first, a module that identifies _partial_ information (maybe
  just the content type) won't pass the query on to other modules, like
  mod_mime, that might further define the encoding or charset.  The
  type_checker hook should clearly become a run-all, and the modules should
  decline if they see someone ahead of them answered a question they were
  going to try to figure.

  Which means - if type_checker becomes RUN_ALL - this new override hook
  fn should become a type_checker again - and RUN_REALLY_FIRST, and let
  other modules _choose_ not to override this election.  (We can run it
  again at the end, for a recount ;)  Votes?


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@90797 13f79535-47bb-0310-9956-ffa450edef68