* backport r39167 from trunk. [ruby-core:52059] [Bug #7812]

* BSDL: update copyright notice for 2013.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@39172 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-02-09

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@39173 b2dd03c8-39d4-4d8f-98ff-823fe69b080e