No functionality change at this time.  I've split _LIBCPP_VISIBLE up into two flags: _LIBCPP_TYPE_VIS and _LIBCPP_FUNC_VIS.  This is in preparation for taking advantage of clang's new __type_visibility__ attribute.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@176593 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/__mutex_base b/include/__mutex_base
index e936ad3..0583df9 100644
--- a/include/__mutex_base
+++ b/include/__mutex_base
@@ -32,7 +32,7 @@
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-class _LIBCPP_VISIBLE mutex
+class _LIBCPP_TYPE_VIS mutex
 {
     pthread_mutex_t __m_;
 
@@ -58,9 +58,9 @@
     _LIBCPP_INLINE_VISIBILITY native_handle_type native_handle() {return &__m_;}
 };
 
-struct _LIBCPP_VISIBLE defer_lock_t {};
-struct _LIBCPP_VISIBLE try_to_lock_t {};
-struct _LIBCPP_VISIBLE adopt_lock_t {};
+struct _LIBCPP_TYPE_VIS defer_lock_t {};
+struct _LIBCPP_TYPE_VIS try_to_lock_t {};
+struct _LIBCPP_TYPE_VIS adopt_lock_t {};
 
 #if defined(_LIBCPP_HAS_NO_CONSTEXPR) || defined(_LIBCPP_BUILDING_MUTEX)
 
@@ -77,7 +77,7 @@
 #endif
 
 template <class _Mutex>
-class _LIBCPP_VISIBLE lock_guard
+class _LIBCPP_TYPE_VIS lock_guard
 {
 public:
     typedef _Mutex mutex_type;
@@ -101,7 +101,7 @@
 };
 
 template <class _Mutex>
-class _LIBCPP_VISIBLE unique_lock
+class _LIBCPP_TYPE_VIS unique_lock
 {
 public:
     typedef _Mutex mutex_type;
@@ -285,7 +285,7 @@
 swap(unique_lock<_Mutex>& __x, unique_lock<_Mutex>& __y) _NOEXCEPT
     {__x.swap(__y);}
 
-struct _LIBCPP_VISIBLE cv_status
+struct _LIBCPP_TYPE_VIS cv_status
 {
     enum __lx {
         no_timeout,
@@ -299,7 +299,7 @@
 
 };
 
-class _LIBCPP_VISIBLE condition_variable
+class _LIBCPP_TYPE_VIS condition_variable
 {
     pthread_cond_t __cv_;
 public: