Merge rubygems-3.0.0.beta3.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66118 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Merge rubygems-3.0.0.beta3.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66118 b2dd03c8-39d4-4d8f-98ff-823fe69b080e