merge from trunk (r28379)
class.c: rdoc fix [ruby-core:30449]
object.c: ditto
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@28380 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge from trunk (r28379)
class.c: rdoc fix [ruby-core:30449]
object.c: ditto
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@28380 b2dd03c8-39d4-4d8f-98ff-823fe69b080e