git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@28927 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merges r28835 from trunk into ruby_1_9_2.¶
version is older than 3.4.4. [ruby-core:31567] [Bug #3637]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@28927 b2dd03c8-39d4-4d8f-98ff-823fe69b080e