Optimizations (#1680)

* Optimizations

1) Some headers simplified for better compilation time
2) Some templates simplified for smaller executable size
3) Eliminate std::future to fix compilation for mingw64
4) PKG installation can be cancelled now
5) cellGame fixes
6) XAudio2 fix for mingw64
7) PPUInterpreter bug fixed (Clang)

* any_pod<> implemented

Aliases: any16, any32, any64
rsx::make_command fixed

Utilities/Atomic.h

@@ -976,4 +976,17 @@ public:
 	{
 		return atomic_op(atomic_test_and_complement<type, T2>{}, rhs);
 	}
+
+	// Minimal pointer support (TODO: must forward operator ->())
+	type operator ->() const
+	{
+		return load();
+	}
+
+	// Minimal array support
+	template<typename I = std::size_t>
+	auto operator [](const I& index) const -> decltype(std::declval<const type>()[std::declval<I>()])
+	{
+		return load()[index];
+	}
 };