Walter Brown sent a list of tests which needed 'additional includes' to match what was in the standard. Added these includes to the tests. No changes to the library or test results.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@225541 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/utilities/tuple/tuple.tuple/tuple.assign/convert_move.pass.cpp

@@ -17,6 +17,7 @@
 #include <tuple>
 #include <string>
 #include <memory>
+#include <utility>
 #include <cassert>
 
 struct B

test/std/utilities/tuple/tuple.tuple/tuple.assign/move.pass.cpp

@@ -14,6 +14,7 @@
 // tuple& operator=(tuple&& u);
 
 #include <tuple>
+#include <utility>
 #include <cassert>
 
 #include "../MoveOnly.h"

test/std/utilities/tuple/tuple.tuple/tuple.cnstr/convert_copy.pass.cpp

@@ -14,6 +14,7 @@
 // template <class... UTypes> tuple(const tuple<UTypes...>& u);
 
 #include <tuple>
+#include <utility>
 #include <string>
 #include <cassert>
 

test/std/utilities/tuple/tuple.tuple/tuple.cnstr/move.pass.cpp

@@ -14,6 +14,7 @@
 // tuple(tuple&& u);
 
 #include <tuple>
+#include <utility>
 #include <cassert>
 
 #include "../MoveOnly.h"

test/std/utilities/tuple/tuple.tuple/tuple.creation/forward_as_tuple.pass.cpp

@@ -13,6 +13,7 @@
 //     tuple<Types&&...> forward_as_tuple(Types&&... t);
 
 #include <tuple>
+#include <type_traits>
 #include <cassert>
 
 template <class Tuple>

test/std/utilities/tuple/tuple.tuple/tuple.elem/get_rv.pass.cpp

@@ -16,6 +16,7 @@
 //   get(tuple<Types...>&& t);
 
 #include <tuple>
+#include <utility>
 #include <memory>
 #include <cassert>