* [OWL_ENTAILMENT,NEW] Added materialize/[0,1].
* [RDF_SERIAL,EXT] Added options argument to all rdf_load2 predicates.
* [SEMWEB_TESTS,EXT] Load test schema and use classes for loading different kinds of tests. Added test clauses for different test types.
* [TEST,NEW] Added the schema for the RDF(S) test cases.