Log Message:
pkgsrc changes:
  - Updating package for p5 module Crypt::Twofish from 2.12nb4 to 2.13
  - Setting gnu-gpl-v2 as license

Upstream changes:
2.13    2009-05-11      Abhijit Menon-Sen <ams@toroid.org>

    * Relicensed on request from the old Artistic License to "the same
      terms as Perl itself" (i.e. new Artistic/GPL).

      (No functional changes.)