Core: Add new system for parallelizing client packet processing. Handle WorldSession updates in Map::Update() where we are safe to proceed. Patch by Ambal.

(And clean up tabs and whitespace while rummaging around in there)
Closes issue 5084.

--HG--
branch : trunk

src/server/game/Entities/Creature/Creature.cpp

@@ -2425,6 +2425,6 @@ void Creature::FarTeleportTo(Map* map, float X, float Y, float Z, float O)
     ResetMap();
     SetMap(map);
     AddToWorld();
-    
+
     SetPosition(X, Y, Z, O, true);
 }

src/server/game/Entities/Creature/CreatureGroups.cpp

@@ -96,7 +96,7 @@ void CreatureGroupManager::LoadCreatureFormations()
     QueryResult guidResult = WorldDatabase.PQuery("SELECT guid FROM creature");
     if (guidResult)
     {
-        do 
+        do
         {
             Field *fields = guidResult->Fetch();
             uint32 guid = fields[0].GetUInt32();

src/server/game/Entities/GameObject/GameObject.cpp

@@ -832,7 +832,7 @@ bool GameObject::isAlwaysVisibleFor(WorldObject const* seer) const
 
     if (IsTransport())
         return true;
-    
+
     return false;
 }
 

src/server/game/Entities/Player/Player.cpp

@@ -1218,7 +1218,7 @@ void Player::SetDrunkValue(uint16 newDrunkenValue, uint32 itemId)
         m_invisibilityDetect.AddFlag(INVISIBILITY_DRUNK);
     else
         m_invisibilityDetect.DelFlag(INVISIBILITY_DRUNK);
-    
+
     m_invisibilityDetect.AddValue(INVISIBILITY_DRUNK, int32(newDrunkenValue - m_drunk) / 256);
 
     m_drunk = newDrunkenValue;
@@ -11999,7 +11999,7 @@ void Player::DestroyItem(uint8 bag, uint8 slot, bool update)
     if (pItem)
     {
         sLog.outDebug("STORAGE: DestroyItem bag = %u, slot = %u, item = %u", bag, slot, pItem->GetEntry());
-        // Also remove all contained items if the item is a bag. 
+        // Also remove all contained items if the item is a bag.
         // This if() prevents item saving crashes if the condition for a bag to be empty before being destroyed was bypassed somehow.
         if (pItem->IsBag() && !((Bag*)pItem)->IsEmpty())
         {

src/server/game/Entities/Player/Player.h

@@ -37,10 +37,10 @@
 #include "Unit.h"
 #include "Util.h"                                           // for Tokens typedef
 #include "WorldSession.h"
- 
+
 #include<string>
 #include<vector>
- 
+
 struct Mail;
 class Channel;
 class Creature;
@@ -2264,7 +2264,7 @@ class Player : public Unit, public GridObject<Player>
         LfgState GetLfgState() const { return m_LookingForGroup.state; }
         void SetLfgState(LfgState state)
         {
-            
+
             switch(state)
             {
                 case LFG_STATE_NONE:
@@ -2644,7 +2644,7 @@ class Player : public Unit, public GridObject<Player>
 
         bool canSeeAlways(WorldObject const* obj) const;
 
-        bool isAlwaysDetectableFor(WorldObject const* seer) const;      
+        bool isAlwaysDetectableFor(WorldObject const* seer) const;
     private:
         // internal common parts for CanStore/StoreItem functions
         uint8 _CanStoreItem_InSpecificSlot(uint8 bag, uint8 slot, ItemPosCountVec& dest, ItemPrototype const *pProto, uint32& count, bool swap, Item *pSrcItem) const;

src/server/game/Entities/Unit/Unit.cpp

@@ -15289,7 +15289,7 @@ void Unit::Kill(Unit *pVictim, bool durabilityLoss)
         // Call creature just died function
         if (creature->IsAIEnabled)
             creature->AI()->JustDied(this);
-		
+
         if (creature->ToTempSummon())
         {
             if (Unit* pSummoner = creature->ToTempSummon()->GetSummoner())

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

@@ -1212,7 +1212,7 @@ class Unit : public WorldObject
         inline bool HealthBelowPctDamaged(int32 pct, uint32 damage) const { return (int32(GetHealth()) - damage) * (int64)100 < GetMaxHealth() * (int64)pct; }
         inline bool HealthAbovePct(int32 pct) const { return GetHealth() * (uint64)100 > GetMaxHealth() * (uint64)pct; }
         inline float GetHealthPct() const { return GetMaxHealth() ? 100.f * GetHealth() / GetMaxHealth() : 0.0f; }
-        inline uint32 CountPctFromMaxHealth(int32 pct) const { return CalculatePctN(GetMaxHealth(), pct); } 
+        inline uint32 CountPctFromMaxHealth(int32 pct) const { return CalculatePctN(GetMaxHealth(), pct); }
 
         void SetHealth(uint32 val);
         void SetMaxHealth(uint32 val);

src/server/game/Entities/Vehicle/Vehicle.h

@@ -57,7 +57,7 @@ enum VehicleSpells
 {
     VEHICLE_SPELL_PARACHUTE                      = 45472
 };
-  
+
 
 struct VehicleSeat
 {