[libcxx] [test] Replace _LIBCPP_STD_VER with TEST_STD_VER.

This replaces every occurrence of _LIBCPP_STD_VER in the tests with
TEST_STD_VER. Additionally, for every affected
file, #include "test_macros.h" is being added explicitly if it wasn't
already there.

https://reviews.llvm.org/D26294

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@286007 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/utilities/function.objects/bitwise.operations/bit_and.pass.cpp

@@ -15,6 +15,8 @@
 #include <type_traits>
 #include <cassert>
 
+#include "test_macros.h"
+
 int main()
 {
     typedef std::bit_and<int> F;
@@ -27,7 +29,7 @@ int main()
     assert(f(0x58D3, 0xEA95) == 0x4891);
     assert(f(0x58D3, 0) == 0);
     assert(f(0xFFFF, 0x58D3) == 0x58D3);
-#if _LIBCPP_STD_VER > 11
+#if TEST_STD_VER > 11
     typedef std::bit_and<> F2;
     const F2 f2 = F2();
     assert(f2(0xEA95, 0xEA95) == 0xEA95);