Log Message:
Updated to p5-XML-Simple-2.03

Changes :
- fixed circular reference check which was incorrectly catching
  'parallel' references (patch from Theo Lengyel)
- changed Storable calls to use locking (reported by Randal
  Schwarz)
- fixed bug whereby :strict mode required forcearray on
  XMLout() (reported by Ville Skytta)
- first production release with SAX support
- added support for 'strict mode' using :strict import tag
- removed locking code (as it was incompatible with iThreads)
- integrated patch for test failures from Sean Campbell
- fixed stringification of references during folding (reported
  by Trond Michelsen)
- fixed incompatability with Tie::IxHash (reported by
  Venkataramana Mokkapati)
- PODs updated

* for changes before v2.00, see ChangeLog