As in: making Windows handhelds behave in Linux. During this little postmortem 2-piece series, we will explore just one of the challenges of adding support to Linux: the controller, and reminisce about the 2 weeks we spent with Rich from FanTheDeck in July while adding support for the Ally X. Some would say that Ally X is an iterative upgrade over its predecessor. Therefore, adding support for it should be trivial. How difficult was it to support the original Ally, anyway, if Valve just di...