added GamepadManager.clearAllIds(), GamepadDevice.clearId(), and make GamepadDevice.setId(id) clear all occurrences of that ID that have already been assigned to other devices.
added GamepadManager.clearAllIds(), GamepadDevice.clearId(), and make GamepadDevice.setId(id) clear all occurrences of that ID that have already been assigned to other devices.

blakeohare/crayon,blakeohare/crayon,blakeohare/crayon,blakeohare/crayon,blakeohare/crayon,blakeohare/crayon,blakeohare/crayon,blakeohare/crayon