Updated some tests

Manu, Gregg,

I have

- updated the tests that we have discussed, ie, 58, 78, 81, 82 are now set as RDFa 1.0 valid only, and I created their counterpart (246-249) for RDFa 1.1
- added a test reflecting ISSUE-133

I decided to live dangerously, and updated it directly on a clone I made locally of the github content. I hope that is all right... I am not sure what should happen to get that appear on the test harness page, though

Cheers

Ivan

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Ivan Herman, W3C Semantic Web Activity Lead
Home: http://www.w3.org/People/Ivan/
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