Log Message:
Update p5-parent to 0.225.

Changes from previous:
----------------------
0.225  20110308
    . Applied a docpatch by Robin Barker to fix the documentation
      about the warning of inheriting from yourself.
      Fixes RT #66459

0.224  20101031
    . Change assignment @ISA = (@ISA, 'new::class')
      to use push @ISA, 'new::class'
      This should make class creation faster from 5.10 onwards
      and reverts a change made in 2.14. If this is critically slow for you
      and you can't upgrade your version of Perl, use the old way.