Update from version 0.81 to version 0.82.

Upstream changes:
0.82 Mon, April 20, 2009
    * Various
      - The deprecation wrappers for some renamed methods were not
        passing arguments to the new method. (nothingmuch)

    * Class::MOP::Immutable
      - Warn during immutablization if the local class provides its own
        constructor, to parallel the warning in Moose when a superclass
        provides its own constructor (doy)

(seb)