test cases

I've begun by looking at the test cases.

I note two issues with
http://www.w3.org/2003/g/embeddedRDF.xsl

1) I don't think it'll work if there are two rdf:RDF elements in a doc.
   (I should try it first)

2) I suggest the xsl:output element have an attribute
      media-type="application/rdf+xml"
   (I suspect this comment extends to all the xsl files used in the 
tests; regular use of this attribute will make it a lot easier to 
support non-RDF/XML output formats)

Jeremy

PS
I am making a list of other test cases that I will at some point want, 
which don't seem to be covered by yours.

See
http://jena.svn.sourceforge.net/viewvc/jena/grddl/trunk/issues.txt?view=markup

When I get there, and write the tests, I will be happy to share these 
with the WG if desired.