on doctype= (was "Re: [tei-council] Glosses, glosses, everywhere, and what ...")

[Syd Bauman]

> > As for the doctype= attribute of <refsDecl>, I gave it a gloss,
> > but I'm not sure I understand this attribute. I *think* it might
> > have been intended to deal with using different reference
> > declarations for each of a variety of DTDs which might have been
> > used at the same time ala CONCUR, but I'm not sure.
> 
> yes, I think so too: look at the Lachman example in the old version
> of NH.

Right. So I think it's pretty clear that this attribute needs to be
updated. 

My gut instinct is to see if anyone needs this functionality the hard
way: just ditch it.