[Bug-gnubg] Small bug - illegal move

[Jon Kinsey]

Edit a (non-symmetrical) position as player 0, change the dice, exit 
edit mode and "illegal move" is displayed.

It's because gnubg has the board position swapped (and hence thinks 
something has changed by the edit).  bd->old_moves is getting set to a 
swapped ms.anBoard in game_set() when the dice value is changed.

I'm not sure exactly what is wrong, ms.fMove, ms.anBoard or game_set() 
or something else...

Jon