CVE-2012-0037

Enforce entity loading policy in raptor_libxml_resolveEntity
and raptor_libxml_getEntity by checking for file URIs and network URIs.

Add RAPTOR_OPTION_LOAD_EXTERNAL_ENTITIES / loadExternalEntities for
turning on loading of XML external entity loading, disabled by default.

This affects all the parsers that use SAX2: rdfxml, rss-tag-soup (and
aliases) and rdfa.
raptor_rdfxml_parser_stats_print(raptor_rdfxml_parser* rdf_xml_parser, 
                                 FILE *stream)
{
  fputs("rdf:ID set ", stream);
  raptor_id_set_stats_print(rdf_xml_parser->id_set, stream);
}

raptor_rdfxml_parser_stats_print(raptor_rdfxml_parser* rdf_xml_parser, 
                                 FILE *stream)
{
  fputs("rdf:ID set ", stream);
  raptor_id_set_stats_print(rdf_xml_parser->id_set, stream);
}
