merge revision(s) 40103: [Backport #8235]

	* thread_pthread.c: Fixes wrong scopes of #if USE_SLEEPY_TIMER_THREAD
	  .. #endif sections.  This fixes a build error on NativeClient.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@40385 b2dd03c8-39d4-4d8f-98ff-823fe69b080e