First part of petAI logic cleanup : Hunter PetAI change: Ignore attacking CC'ed targets unless explicitly asked for by player

(thanks to QAston, Shauren, Liberate for the discussions and codehelp to sort this out properly)

--HG--
branch : trunk

src/server/game/Entities/Unit/Unit.h

@@ -1624,7 +1624,7 @@ class Unit : public WorldObject
         bool HasAuraType(AuraType auraType) const;
         bool HasAuraTypeWithMiscvalue(AuraType auratype, int32 miscvalue) const;
         bool HasAuraTypeWithValue(AuraType auratype, int32 value) const;
-        bool HasNegativeAuraWithInterruptFlag(uint32 flag);
+        bool HasNegativeAuraWithInterruptFlag(uint32 flag, uint64 guid = 0);
 
         AuraEffect * IsScriptOverriden(SpellEntry const * spell, int32 script) const;
         uint32 GetDiseasesByCaster(uint64 casterGUID, bool remove = false);