*Fix the bug that warlord najentus spams spells

*Fix the bug that supremus volcano can move
Thanks to Farah

--HG--
branch : trunk

src/bindings/scripts/scripts/zone/black_temple/boss_supremus.cpp

@@ -240,6 +240,7 @@ struct TRINITY_DLL_DECL npc_volcanoAI : public ScriptedAI
         m_creature->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NON_ATTACKABLE);
         m_creature->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NOT_SELECTABLE);
         DoCast(m_creature, SPELL_VOLCANIC_ERUPTION);
+        me->SetReactState(REACT_PASSIVE);
     }
 
     void EnterCombat(Unit *who) {}

src/bindings/scripts/scripts/zone/black_temple/boss_warlord_najentus.cpp

@@ -125,9 +125,9 @@ struct TRINITY_DLL_DECL boss_najentusAI : public ScriptedAI
 
     void ResetTimer(uint32 inc = 0)
     {
-        events.ScheduleEvent(EVENT_NEEDLE, 10000 + inc, GCD_CAST);
+        events.RescheduleEvent(EVENT_NEEDLE, 10000 + inc, GCD_CAST);
-        events.ScheduleEvent(EVENT_SPINE, 20000 + inc, GCD_CAST);
+        events.RescheduleEvent(EVENT_SPINE, 20000 + inc, GCD_CAST);
-        events.ScheduleEvent(EVENT_SHIELD, 60000 + inc);
+        events.RescheduleEvent(EVENT_SHIELD, 60000 + inc);
     }
 
     void UpdateAI(const uint32 diff)

src/game/CreatureAIImpl.h

@@ -107,6 +107,12 @@ class EventMap : private std::map<uint32, uint32>
             insert(std::make_pair(time, eventId));
         }
 
+        void RescheduleEvent(uint32 eventId, uint32 time, uint32 gcd = 0, uint32 phase = 0)
+        {
+            CancelEvent(eventId);
+            ScheduleEvent(eventId, time, gcd, phase);
+        }
+
         uint32 ExecuteEvent()
         {
             while(!empty())
@@ -142,6 +148,28 @@ class EventMap : private std::map<uint32, uint32>
                     ++itr;
             }
         }
+
+        void CancelEvent(uint32 eventId)
+        {
+            for(iterator itr = begin(); itr != end();)
+            {
+                if(eventId == (itr->second & 0x0000FFFF))
+                    erase(itr++);
+                else
+                    ++itr;
+            }
+        }
+
+        void CancelEventsByGCD(uint32 gcd)
+        {
+            for(iterator itr = begin(); itr != end();)
+            {
+                if(itr->second & gcd)
+                    erase(itr++);
+                else
+                    ++itr;
+            }
+        }
 };
 
 enum AITarget