(svn r9418) -Codechange: Implement actions 1/2/3 for cargos, callback handler and custom icon sprites

src/cargotype.h

@@ -42,6 +42,7 @@ struct CargoSpec {
 	SpriteID sprite;
 
 	uint16 classes;
+	const struct SpriteGroup *group;
 
 	bool IsValid() const;
 };