Update from version 0.71 to version 0.72.

Upstream changes:
0.72 Mon, December 8, 2008
    * Class::MOP::Package
      - Pass options to _new, so subclass' attributes can be
        initialized (Sartak)
    * Class::MOP::Method
      - In the docs, indicate that package_name and name are required
        when calling ->wrap (Stefan O'Rear)

(seb)