* thread.c (blocking_region_begin): avoid RUBY_VM_CHECK_INTS() call during GVL state transition. [Bug#3354] [ruby-dev:41435]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@28263 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merges r28055 from trunk into ruby_1_9_2.¶
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@28263 b2dd03c8-39d4-4d8f-98ff-823fe69b080e