Thread: Added #8508 test.

svn path=/trunk/libs/thread/; revision=84097
Thread: replace boost:tuple in async_func.hpp as not movable until the patch is applied.

svn path=/trunk/boost/thread/; revision=84098
Thread: update the externally_locked_stream interface.

svn path=/trunk/boost/thread/; revision=84109
Thread: update externally_locked.

svn path=/trunk/boost/thread/; revision=84110
Thread: remove definition of BOOST_THREAD_NOEXCEPT_OR_THROW.

svn path=/trunk/boost/thread/; revision=84134
Thread: Rollback unwanted and unchecked change 

svn path=/trunk/boost/thread/; revision=84138
Thread: fix warning

svn path=/trunk/libs/thread/; revision=84185
Thread: merge last externally°locked evolution + async_funct.

svn path=/branches/release/boost/thread/; revision=84198