Tests found in JTS/testxml/general and not ported as of rev 3991 (Jun 30 2014)
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TestDensify.xml
 - requires densify::Densifier still unported

TestPreparedPointPredicate.xml
 - requires using custom operation (PreparedGeometryOperation)

TestPreparedPolygonPredicate.xml
 - requires using custom operation (PreparedGeometryOperation)

TestPreparedPredicatesWithGeometryCollection.xml
 - requires using custom operation (PreparedGeometryOperation)
