bug: saving and loading of ai
The saving and loading of ai-players is currently disabled, since the function rdwr is not defined virtual in simplay.h. That means everytime a game is saved/loaded only the rdwr-function of the base cl**** spieler_t is called. A fix, which simply inserts 'visual' there, will made all earlier savegames with ai-players unloadable.
How should this be fixed?