Log Message:
Update spamprobe to 0.9g2.

Patch provided by Ossi Herrala <$MAINTAINER> in private mail.

CHANGED:
 * This release moves from Paul's original formula to a slightly modified
   one that yields more evenly distributed scores. To continue using old
   formula, use -o orig-score command line option.

ADDED:
 * -C <number> command line option. This tells SpamProbe to assign a default,
   somewhat neutral, probability to any term that does not have a weighted
   (good count doubled) count of at least specified number in the database.
   This prevents terms which have been seen only a few times from having
   an unreasonable influence on the score of an email containing them.
   Default count have changed. It is now 5. Old was 3.
 * Added -o <option_name> command line option to specify alternate way of
   scoring. Consult README.txt for more info.
 * Added -l <number> command line option. Changes the spam probability
   threshold for emails from the default (0.7) to <number>.
 * Added tokenize command. Prints the tokens found in the file one word
   per line in human readable format with spam probability, good count,
   spam count, message count, and word in columns separated by whitespace.

IMPROVED:
 * -H command line option to add more headers to scan.
 * Improved performance by removing some redundant calculations and
   reducing the amount of I/O in train-* mode.