Log Message:
Updated to p5-URI-1.23

Changes :
- Support for tn3270 URIs.
- Use anchored DNS lookups in URI::Heuristic as suggested
  by Malcolm Weir <malc@gelt.org>.
- Delay calculation of MY_COUNTRY() in URI::Heuristic.
  Patch by Ed Avis <ed@membled.com>.
- Make test suite work for UNC paths.
  Patch by Warren Jones <wjones@fluke.com>.