RE: some comments from Chris Kaler on the versioning draft

> I talked with Chris on the phone today, and he asked for a
> change and a clarification
>
> - change the MUST to a SHOULD for the "version URL can never be re-used".
>
> Chris is concerned that various reasonable ways of getting version URL
> uniqueness have a chance of collision if a given host name is mapped
> to a new server.
>
> In general, I try to avoid SHOULD in favor of MUST whenever possible.
> Since there has been a lot of debate on this issue, I suppose I can
> live with SHOULD here.

I strongly support the use of SHOULD in this case.  Thanks for making the
change.

	Mark