Performance of 0.13

[Boris 'pi' Piwinger]

Hi!

Great work, guys!

I just took all my training archive and rebuild the database
in my previous version (0.11.1.7), then took the same
database to check:
Spam:
  11660 test.spam
False negatives:
563
Ham:
  21736 test.ham
False positives:
1

Then I installed the new version and did the same job:
Spam:
  11660 test.spam
False negatives:
395
Ham:
  21736 test.ham
False positives:
1

So this is really much better as expected.

pi