Log Message:
Update from version 0.47nb1 to 0.48.

Upstream changes:

0.48  Tue Aug  20 2008
	- Cleaned up DESTROY method to not undef _fields (This was
	  my error, not the submitted patch)
	  Thanks to Dulaunoy Fabrice <fabrice@dulaunoy.com>
	  for showing me the error of my ways