Update p5-Moose from version 0.75 to version 0.76.

Pkgsrc changes:
- Adjust dependency on p5-Class-MOP

Upstream changes:
0.76 Mon, April 27, 2009
    * Moose::Meta::TypeConstraint
      - Do not run coercions in coerce() if the value already passes the type
        constraint (hdp)

    * Moose::Meta::TypeConstraint::Class
      - In validation error messages, specifically say that the value is not
        an instance of the class. This should alleviate some frustrating
        forgot-to-load-my-type bugs. rt.cpan.org #44639 (Sartak)

    * Moose::Meta::Role::Application::ToClass
      - Revert the class-overrides-role warning in favor of a solution outside
        of the Moose core (Sartak)

(seb)