adom.kbd handling
Current handling of adom.kbd errors is not user friendly
Currently, if there is a problem with adom.kbd, it gets renamed and default is used. This is not user friendly, as user has to quit, search for the problem, rename back, try again...
User should have the possibility to decide between current behavior and previous one, where the game exited and user was given a message detailing the problem - missing or duplicate command, line number.