Moved ControllerInterface to InputCommon. Moved GCPadNew GUI/Config code to a new project, InputPluginCommon. It is used by both GCPadNew and WiimoteNew. I hope that I included everyone's fixes to GCPadNew and ControllerInterface.
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5355 8ced0084-cf51-0410-be5f-012b33b47a6e