git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@45941 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
this change is only for release management, not bug fix.
[Backport #9837] [ruby-dev:48218]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@45941 b2dd03c8-39d4-4d8f-98ff-823fe69b080e