fixed inf. loop in __eq__
fixed inf. loop in __eq__

avorio/rdflib,ssssam/rdflib,armandobs14/rdflib,ssssam/rdflib,dbs/rdflib,marma/rdflib,yingerj/rdflib,RDFLib/rdflib,RDFLib/rdflib,avorio/rdflib,yingerj/rdflib,armandobs14/rdflib,ssssam/rdflib,marma/rdflib,armandobs14/rdflib,yingerj/rdflib,RDFLib/rdflib,dbs/rdflib,marma/rdflib,dbs/rdflib,ssssam/rdflib,avorio/rdflib,armandobs14/rdflib,yingerj/rdflib,marma/rdflib,RDFLib/rdflib,dbs/rdflib,avorio/rdflib