#77 Allow local namespaces in RDF/XML generation

[Andrew Newman]

I don't want <!ENTITY ns5 'jis://file/'>, I would rather prefer:

<name xmlns="jis://file/">2F143D1D-5C57-CAC8-0DE1-6F380FE7C20C</name>

instead of:

<ns5:name>2F143D1D-5C57-CAC8-0DE1-6F380FE7C20C</ns5:name>

This can be configured using the property "org.jrdf.writer.rdfxml.writeLocalNamespace" is true will print the former. The later is still the default however.