Fixing 'Aquire' typo and libcxx build.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@277456 91177308-0d34-0410-b5e6-96231b3b80d8

src/include/atomic_support.h

@@ -45,7 +45,7 @@ namespace {
 enum __libcpp_atomic_order {
     _AO_Relaxed = __ATOMIC_RELAXED,
     _AO_Consume = __ATOMIC_CONSUME,
-    _AO_Aquire  = __ATOMIC_ACQUIRE,
+    _AO_Acquire = __ATOMIC_ACQUIRE,
     _AO_Release = __ATOMIC_RELEASE,
     _AO_Acq_Rel = __ATOMIC_ACQ_REL,
     _AO_Seq     = __ATOMIC_SEQ_CST

src/memory.cpp

@@ -117,7 +117,7 @@ __shared_weak_count::__release_weak() _NOEXCEPT
     // threads, and have them all get copied at once.  The argument
     // also doesn't apply for __release_shared, because an outstanding
     // weak_ptr::lock() could read / modify the shared count.
-    if (__libcpp_atomic_load(&__shared_weak_owners_, _AO_Aquire) == 0)
+    if (__libcpp_atomic_load(&__shared_weak_owners_, _AO_Acquire) == 0)
     {
         // no need to do this store, because we are about
         // to destroy everything.