* vm.c: Typo in overview for example of Thread#status returning false
  Reported by Lee Jarvis


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39530 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-02-28

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39531 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* thread.c: rdoc formatting for Thread, ThreadGroup, and ThreadError


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39532 b2dd03c8-39d4-4d8f-98ff-823fe69b080e