Add Ruby 1.9.3-p484 and Ruby 2.0.0-p353

Add new Ruby versions from
https://www.ruby-lang.org/en/news/2013/11/22/ruby-1-9-3-p484-is-released/
https://www.ruby-lang.org/en/news/2013/11/22/ruby-2-0-0-p353-is-released/