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_turtle_writer_raw_counted(raptor_turtle_writer* turtle_writer,
                                 const unsigned char *s, unsigned int len)
{
  raptor_iostream_counted_string_write(s, len, turtle_writer->iostr);
}

raptor_turtle_writer_raw_counted(raptor_turtle_writer* turtle_writer,
                                 const unsigned char *s, unsigned int len)
{
  raptor_iostream_counted_string_write(s, len, turtle_writer->iostr);
}
