[futures.atomic_future] and notify_all_at_thread_exit.  This completes the header <future> and all of Chapter 30 (for C++0x enabled compilers).

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@113017 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/thread b/include/thread
index 123c472..c380fe6 100644
--- a/include/thread
+++ b/include/thread
@@ -295,6 +295,7 @@
     __thread_struct();
     ~__thread_struct();
 
+    void notify_all_at_thread_exit(condition_variable*, mutex*);
     void __make_ready_at_thread_exit(__assoc_sub_state*);
 };