* Began work on new HAL for gamepad and joystick devices which will enable addition of XInput support after existing code is fully refactored.
* Started work on cleaning up some aspects of the keybinding system - removed old gamekeydown array which was more or less unused, and eliminated at_function binding type.
* Rewrote AM_Responder to avoid use of at_function binding type.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2396 86ba831e-150c-0410-ab35-e06eaae15ed9