Log Message:
Update spamassassin to 2.41.

Major changes include:

 - SpamAssassin now *REQUIRES* procmail for local delivery support; "-P"
   option is now the default.  Unless you use procmail, Mail::Audit, KMail,
   or an MTA-level integration, do not upgrade blindly, your mail *WILL*
   spill all over the floor in a big mess.

 - significant speed increases, mostly from Matt Sergeant and Dan Quinlan

 - bugs in whitelist_to, all_spam_to and friends fixed

 - rules which were causing too many false-positives removed or fixed:
   DOUBLE_CAPSWORD, UPPERCASE_25_50, PARTIAL_RFC_2369, MSGID_CHARS_SPAM,
   many others

 - lots of rule fixes, and lots of new rules