Added special-case for constantize('x') to return X_ so not to conflict with the Context X.
Added special-case for constantize('x') to return X_ so not to conflict with the Context X.

mdittmer/foam,jacksonic/foam,osric-the-knight/foam,foam-framework/foam,jlhughes/foam,mdittmer/foam,osric-the-knight/foam,jacksonic/foam,jacksonic/foam,jlhughes/foam,osric-the-knight/foam,jlhughes/foam,foam-framework/foam,foam-framework/foam,jlhughes/foam,mdittmer/foam,mdittmer/foam,foam-framework/foam,jacksonic/foam,foam-framework/foam,osric-the-knight/foam