dcat diff, please review

When we agreed [1] to publish dcat's second last call, we included 24 
hours review of a diff by the WG.  It took a while to get things ready, 
but here's that diff:

    https://dvcs.w3.org/hg/gld/raw-file/default/dcat/diff-20130312-20130801.html

If you see editorial errors, please report them and we'll fix them for 
the following release.  If you see a show stopper, something that means 
we really shouldn't release the document, you'll need to speak up by 
this time tomorrow.

(Thanks for Phil for stepping in and helping get the document ready.)

       -- Sandro

[1] https://www.w3.org/2013/meeting/gld/2013-07-18#resolution_2