xhtml-rdfa updated

As per an instruction from Ben, I have updated xhtml-rdfa and the 
corresponding DTDs.  The updated editors draft, which still needs a lot 
of work IMHO, is at http://www.w3.org/MarkUp/2007/ED-xhtml-rdfa-20070811/

The DTDs for xhtml+rdfa and html401+rdfa were updated in place at 
http://www.w3.org/MarkUp/DTD

Note that, as per our discussions on Thursday, the xhtml+rdfa example 
markup language DOES NOT permit xml:base - xml:base is not permitted in 
XHTML 1.1, and doing so in this markup language would be misleading at best.

-- 
Shane P. McCarron                          Phone: +1 763 786-8160 x120
Managing Director                            Fax: +1 763 786-8180
ApTest Minnesota                            Inet: shane@aptest.com