Add the ability to use Gamepads or Joystick

[xplshn]

Add the ability to use Gamepads and Joysticks with KeyD, it'd be a nice addition.

Also, here's something you might find useful, http://www.freebsddiary.org/APC/usb_hid_usages.php

[herrsimon]

Adding mouse support (and hence gamepad support, as most of them are internally recognized as mice with additional keys) is on the agenda.