Log Message:
Update p5-autobox from version 2.55 to version 2.70.

Upstream changes:
2.70  Wed Mar 17 19:27:44 2010
    - replace autobox_can and autobox_isa with autobox_class
      this also fixes import, unimport and VERSION
      - added t/version.t
      - renamed t/universal.t => t/autobox_class.t

2.60  Wed Mar 17 16:34:56 2010
    - fix RT #46814 (thanks Tye McQueen)
      - added t/rt_46814.t
    - fix RT #49273 (thanks Daniel Austin)
    - fix RT #55565 (thanks Schwern)
    - fix RT #55652 (thanks Schwern)
      - $native->isa and $native->can must now be called as \ 
$native->autobox_isa and $native->autobox_can
      - added t/rt_55652.t