Updating package for CPAN distribution Package-Stash in
devel/p5-Package-Stash from 0.33nb2 to 0.34.

pkgsrc changes:
- adjusting dependencies

Upstream changes:
0.34  2013-01-04
      - support anonymous stashes on newer perl versions
      - prevent harmful effects from invalid settings for
        $ENV{PACKAGE_STASH_IMPLEMENTATION}
      - switch to Module::Implementation

(sno)