* thread.c (ruby_kill): release GVL while waiting signal delivered.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39826 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-03-20

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39827 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* thread.c (ruby_kill): added a few comments.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39828 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* test/ruby/test_signal.rb (test_hup_me): added a few comments.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39829 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/bigdecimal/bigdecimal.c: fixed typo.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39830 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/bigdecimal/bigdecimal.c: fixed typo. same as r39830

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39831 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* test/rinda/test_rinda.rb: remove unused variables.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39832 b2dd03c8-39d4-4d8f-98ff-823fe69b080e