[libcxx] [tests] Add missing includes, especially <functional>, to priority.queue/types.pass.cpp.

[STL_MSFT]

Summary

Add missing includes, especially <functional>, to priority.queue/types.pass.cpp.

This is required according to the Standard, and it fixes compiler errors with MSVC (as our headers don't usually drag in std::greater).

[EricWF]

r275751.

test/std/containers/container.adaptors/priority.queue/types.pass.cpp

 //     typedef typename container_type::size_type       size_type;
 //
 // protected:
 //     container_type c;
 //     Compare comp;
 
 #include <queue>
 #include <cassert>
+#include <deque>
+#include <functional>
+#include <memory>
 #include <type_traits>
+#include <vector>
 
 struct test
     : private std::priority_queue<int>
 {
     test()
     {
         c.push_back(1);
         assert(comp(1, 2));