first pass at allowing Moose and Moose::Role to omit the meta method

first pass at allowing Moose and Moose::Role to omit the meta method

not currently working because of issues with metaclass
reinitialization... if someone uses a metarole type thing after moose
installs the meta method, it gets turned back into a regular
Moose::Meta::Method object, and so a bunch of checks don't work
correctly (this is the cause of the warnings in the test suite).