prov-family.provx errors

I just ran a schema validator on prov-family.provx and there are a number of errors, but most are about invalid xs:QName values and should be straightforward to resolve.

The validation results are attached.

The most common issue by far is that the local part of a prov:id starts with a number, which is not allowed in xs:QName.

w3:2011/01/prov-wg-charter
email:2012Apr/0583
chairs:2011OctDec/0004
...

I believe our other issues are caused by

1) having a '/' in the local part of a xs:QName
2) our use of prov:key

I will look further into these.

--Stephan