revertd.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42954 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
added reason why revert.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42955 b2dd03c8-39d4-4d8f-98ff-823fe69b080e