Schema changes in the Rails test suite

Hi Johnny,

related to your original issue I have made a fix to it on https://github.com/rafaelfranca/rails/commit/c0a07afa0185b7983fce66604f5883e3d7e03e60. The commit message explain the problem.

About you question, if you change the schema.rb file that attribute should be accesible to you in the tests.