Patches welcome!  Please e-mail tjmather@tjmather.com to coordinate.

* Create a flag to set GDOME_* prefix for DOM constants (suggested by Ilya
Sterin), see http://aspn.activestate.com/ASPN/Mail/Message/1062045
* Add events module
* Add traversal module
* Clean up generate script
* update test scripts (test scripts are based on gdome2-0.7.0)
* separate XML::GDOME::SAX* into new distribution, since
  XML::SAX shouldn't be required for DOM module.
* Documentation improvements
