revised OWL media type registration document (IETF form)

In response to my action item on a media type document, I have extracted the
media type section from [1] and updated it to reference the latest *published
versions* of the OWL documents.  This document is consistent with the resolution
on media types made at the
December 12th telecon: 
  Close Issue 5.13 by advising users in the documents that they can use:
  application/xml, application/rdf+xml, application/owl+xml.

The included document has been returned to the format Jonathon originally used. 
I still plan to put it into a W3C format, but wanted to get this out for people
to see before the telecon today.  There are a few, mostly minor, issues
concerning this draft.
- the LC version of this should use LC version OWL references (some name and
date changes needed).
- acknowledgements section still needs filling in.
- Jonathon is still listed as the author and contact for this media type.  This
seems appropriate.
- This seems to have emulated the rdf+xml media registration [2] and thus
includes a Social Context section.  Knowing this still to be controversial, I
left this section empty.  There are two obvious alternatives however, a) delete
the section or b) refer to the social context section in [2].  I have no
preference.

Evan

[1]
http://lists.w3.org/Archives/Public/www-webont-wg/2003Jan/att-0071/01-owl-ref-proposed.html

[2] http://www.ietf.org/internet-drafts/draft-swartz-rdfcore-rdfxml-mediatype-02