Razer Serval Controller Support

[Percipient24]

So this is a strange one.

See branch cgc-game/feature/razer-serval which has a partial implementation for OSX.

Currently working: ABXY buttons, sticks, LB, RB, L3, R3, and the top row of back/power/forward buttons.

Currently busted: D-Pad (which I expect to be a POV hat), triggers, bottom row back/home buttons.

At this point, I'm not sure what the problem is, especially since http://chibatacreations.com/ - Joystick Show reports everything that's working, plus the D-Pad.

To play around with it yourself, uncomment the Gdx.app.log statements in InputManager.
To add more than Mac, you'll need to create Serval[OS].java following the existing pattern, add a case to ControlerMap.java, and add to ChaseApp.java's getOS()'s conditionals.