Update to 1.4.21:

2010-01-30 Raptor Version 1.4.21 Released

  This is a bug fix only release with no new features. New development
  has moved to raptor 2 where a planned ABI and API break is underway.
  RDFa parser buffer management problems were fixed
  Turtle parser and serializer now use QNames correctly against
  specification
  RDF/XML parser now resets correctly to detect duplicate rdf:IDs
  Made a few other minor bug and build fixes
  Fixed reported issues: 0000318, 0000319, 0000326, 0000331, 0000332 and
  0000337

(wiz)