object.c: undef Module#prepend_features on Class
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42541 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
object.c: undef Module#prepend_features on Class
well as Module#append_features. [Fixes GH-376]
on similar methods as module_function.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42541 b2dd03c8-39d4-4d8f-98ff-823fe69b080e