Added some mappings for Linux

I've verified the button and axis mappings are correct on Ubuntu 13.10 using an "Controller (XBOX 360 Wireless Receiver for Windows)" and a PS3 clone controller that has the same mappings as a genuine controller. I haven't verified the numerical range of the XBox360 triggers, however they are mapped to different analog axises (rather than +/- on the same axis).

I've also added detection for a "SHENGHIC 2009/0708ZXW-V1Inc. PLAYSTATION(R)3Conteroller" (sic) PS3 clone controller, including a profile without MotioninJoy for Windows. This hardware is sold as "Spartan" brand in EB Games (Australia's Gamestop). I haven't included the tilt sensor since I'm not sure how to test it, but the specs claim the hardware includes this feature.