Erwan

- Added Dr Solomat's TEMPEST expansion
- Added Sacrifice as part of the cost of activated abilities. Making it work as an extra cost for "put in play" still requires some work though. "Render" methods need to be written correctly
- Added cards with sacrifice in the existing sets. Most of them need testing...

projects/mtg/src/GuiLayers.cpp

@@ -118,6 +118,11 @@ void GuiLayers::Update(float dt, Player * currentPlayer){
   u32 key;
   while ((key = JGE::GetInstance()->ReadButton()))
     {
+      GameObserver * game = GameObserver::GetInstance();
+      if (game->waitForExtraPayment && key == PSP_CTRL_CROSS){
+        game->waitForExtraPayment = NULL;
+        continue;
+      }
       for (i=0; i<nbitems; i++){
 	if (!isAI){
 	  if (0 != key)