* Added initial support for XInput controller subtypes, starting with
driving, arcade and flight controllers.
* Check XInput capabilities to ignore buttons and hats that aren't
present.
* Added preliminary SDL Game Controller joystick provider. Reconnection
and mixed Game Controller/Joystick devices are unsupported.
* Show the input token for the highlighted control on input device
menus.
-ui: Allow menus to set required space above and below menu when metrics
change. Fixes the initial bad layout on the system selecton menu, or
bad layout after resizing windows.
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