add tag v2_0_0_247

@nagachika nagachika tagged this Jun 27, 2013 · 21338 commits to trunk since this tag

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v2_0_0_247@41674 b2dd03c8-39d4-4d8f-98ff-823fe69b080e