Quick Mushroom turn-in fix

This is a quick and dirty (will be replaced later) fix for having to screen transition after turning in the Mushroom, not applied in shuffles that don't move the potion shop. Also a minor fix is in place so the list of entrances that don't invoke the Skull Final etc. exit offset is expanded to include the bottom of Superbunny Cave and TR Big Chest.

BaseClasses.py

@@ -59,6 +59,7 @@ class World(object):
         self.can_take_damage = True
         self.difficulty_requirements = None
         self.fix_fake_world = True
+        self.powder_patch_required = self.shuffle not in ['vanilla', 'dungeonssimple', 'dungeonsfull']
         self.spoiler = Spoiler(self)
 
     def intialize_regions(self):