Log Message:
Updating devel/p5-MooseX-Singleton from 0.19 to 0.21

Upstream changes:
0.21 2009-09-12
    - Various modules in this class were trying to load the old pre-0.20
      classes, which have all been renamed. Tests passed if you had 0.19 or
      earlier installed, but failed for fresh installations.  (Dave Rolsky)

0.20 2009-09-11
    - Converted this extension to use roles rather than metaclass
      subclasses. This means it will cooperate with other extensions on CPAN,
      like MooseX::StrictConstructor, etc. (Dave Rolsky)