Metaclass 
Adds a __metaclass__ method to all Ruby objects.
Motivations
- Even though WhyTheLuckyStiff's metaid gem does something similar, apparently the metaclass method without underscores doesn't play well with Rails v2.3.
- I'm trying to extract code out of the mocha gem and this is an obvious candidate.
License
This library is released under the MIT License. See COPYING.txt.