Improve ChunkFile.h:

- Add support for std::set and std:pair.

- Switch from std::is_pod to std::is_trivially_copyable, to allow for
  types that have constructors but trivial copy constructors.  Easy,
  except there are three different nonstandard versions of it required
  on different platforms, in addition to the standard one.

Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_Device_usb.h

@@ -39,13 +39,6 @@ struct SQueuedEvent
 	}
 };
 
-// Hacks for ChunkFile to accept SQueuedEvent as POD
-namespace std
-{
-template <>
-struct is_pod<SQueuedEvent> : std::true_type {};
-}
-
 // Important to remember that this class is for /dev/usb/oh1/57e/305 ONLY
 // /dev/usb/oh1 -> internal usb bus
 // 57e/305 -> VendorID/ProductID of device on usb bus