git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@28503 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merges r28453 and r28454 from trunk into ruby_1_9_2.¶
class should be attached to the dup'ed class, not the original
class. [ruby-core:30843] [Bug #3461]
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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@28503 b2dd03c8-39d4-4d8f-98ff-823fe69b080e