comctl32/imagelist: Don't change destination size in ImageList_Duplicate without corresponding allocation.

dinput: COM cleanup - use interfaces instead of vtbl. Combine both Unicode and ASCII interfaces into the same classes.

dinput: Explicitly define ASCII and Unicode methods in joystick base class. Use new methods in child classes.

dinput: Explicitly define ASCII and Unicode methods in DirectInputDevice base class. Make ASCII methods call Unicode. Use new methods in child classes.