[Spambayes] binascii.Error

[Skip Montanaro]

A couple people recently reported binascii.Error being raised by pop3proxy,
etc.  Sjoerd Mullender filed a bug report on SF as well.  I just checked in
a change to spambayes/tokenizer.py which seems to fix the problem.  Please
give the latest CVS version a try and let me know if you still experience
the problem.

As an added bonus, a new token, "charset:invalid" gets generated when
binascii barfs.  More clues for the guys in the white hats.

Skip