[libc++] Use __add_pointer and __remove_pointer builtins when they are fixed

Author: philnik777

libcxx/include/__config

@@ -1076,7 +1076,7 @@ typedef __char32_t char32_t;
 
 // TODO(varconst): currently, there are bugs in Clang's intrinsics when handling Objective-C++ `id`, so don't use
 // compiler intrinsics in the Objective-C++ mode.
-#  ifdef __OBJC__
+#  if defined(__OBJC__) && defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER < 2010
 #    define _LIBCPP_WORKAROUND_OBJCXX_COMPILER_INTRINSICS
 #  endif