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/Server/Protocol/Handlers/ChatHandler.cpp

@@ -473,7 +473,7 @@ void WorldSession::HandleMessagechatOpcode(WorldPacket & recv_data)
 
 void WorldSession::HandleEmoteOpcode(WorldPacket & recv_data)
 {
-    if (!GetPlayer()->isAlive() || GetPlayer()->hasUnitState(UNIT_STAT_DIED)) 
+    if (!GetPlayer()->isAlive() || GetPlayer()->hasUnitState(UNIT_STAT_DIED))
         return;
 
     uint32 emote;

src/server/game/Server/Protocol/Handlers/GuildHandler.cpp

@@ -358,7 +358,7 @@ void WorldSession::HandleGuildBankerActivate(WorldPacket & recv_data)
     {
         if (Guild* pGuild = _GetPlayerGuild(this))
             pGuild->SendBankTabsInfo(this);
-        else 
+        else
             Guild::SendCommandResult(this, GUILD_UNK1, ERR_GUILD_PLAYER_NOT_IN_GUILD);
     }
 }

src/server/game/Server/Protocol/Handlers/MiscHandler.cpp

@@ -144,7 +144,7 @@ void WorldSession::HandleGossipSelectOptionOpcode(WorldPacket & recv_data)
                 _player->OnGossipSelect(unit, gossipListId, menuId);
         }
         else
-        {    
+        {
             go->AI()->GossipSelectCode(_player, menuId, gossipListId, code.c_str());
             sScriptMgr.OnGossipSelectCode(_player, go, _player->PlayerTalkClass->GossipOptionSender(gossipListId), _player->PlayerTalkClass->GossipOptionAction(gossipListId), code.c_str());
         }

src/server/game/Server/Protocol/Handlers/SpellHandler.cpp

@@ -225,7 +225,7 @@ void WorldSession::HandleOpenItemOpcode(WorldPacket& recvPacket)
     if(!(proto->Flags & ITEM_PROTO_FLAG_OPENABLE) && !pItem->HasFlag(ITEM_FIELD_FLAGS, ITEM_FLAG_WRAPPED))
     {
         pUser->SendEquipError(EQUIP_ERR_CANT_DO_RIGHT_NOW, pItem, NULL);
-        sLog.outError("Possible hacking attempt: Player %s [guid: %u] tried to open item [guid: %u, entry: %u] which is not openable!", 
+        sLog.outError("Possible hacking attempt: Player %s [guid: %u] tried to open item [guid: %u, entry: %u] which is not openable!",
                 pUser->GetName(), pUser->GetGUIDLow(), pItem->GetGUIDLow(), proto->ItemId);
         return;
     }