Log Message:
Update chasen to 2.4.1.

pkgsrc change:

  o Add DESTDIR supoprt.
  o Update MASTER_SITES and HOMEPAGE.

chasen changes from 2.3.3 to 2.4.1.

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ChaSen 2.4.1 (2007/07/03)
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- bug fix
  \ 
https://sourceforge.jp/tracker/index.php?func=detail&aid=10259&group_id=2619&atid=9708

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ChaSen 2.4.0 (2007/03/30)
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- bug fix
- -s option (re-analysis)