Adorn make_unique with visibility and inline attributes

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@185468 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/memory b/include/memory
index ad4b5d3..758e364 100644
--- a/include/memory
+++ b/include/memory
@@ -3104,6 +3104,7 @@
 };
 
 template<class _Tp, class... _Args>
+inline _LIBCPP_INLINE_VISIBILITY
 typename __unique_if<_Tp>::__unique_single
 make_unique(_Args&&... __args)
 {
@@ -3111,6 +3112,7 @@
 }
 
 template<class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
 typename __unique_if<_Tp>::__unique_array_unknown_bound
 make_unique(size_t __n)
 {