aicode and revised legendary rule

added aicode for cards that uses reveal. since reveal cancels for ai,
aicode is the alternative code. use basic code only.
aicode=activate dosomething...
aicode - use with caution, its very basic atm and you must test each
card that uses it as it can cause crash.
legendary rule moved to game state based effect so it will not conflict
with cards with copy effects and andability. the legendary check applies
only when  legendrule is found.

projects/mtg/include/GameObserver.h

@@ -125,6 +125,8 @@ class GameObserver{
   void enchantmentStatus();
   void Affinity();
   bool AffinityNeedsUpdate;
+  bool foundlegendrule;
+  void checkLegendary(MTGCardInstance * card);
   void addObserver(MTGAbility * observer);
   bool removeObserver(ActionElement * observer);
   void startGame(GameType, Rules * rules);