Update aura system:

* Change system logic - unify Auras, AreaAuras and PersistentAreaAuras:
  * Aura has now its owner - which is the WorldObject, which applies aura (creates AuraApplication object) dependant on aura radius, and effect type
  * Owner can be Dynobj (DynObjAura class) for PersistentAreaAuras, or Unit (UnitAura class) for Area and nonArea auras
  * Aura data is shared for all units which have AuraApplication of the Aura
   * Because of that AuraEffect handlers , and periodic tick functions can't modify AuraEffect object (they are const now)
  * Remove spell source and AreaAuraEffect classes
  * Add AuraEffect::UpdatePeriodic function, to allow periodic aura object modification (target independant)
  * Add AuraEffect::CalculateAmount and AuraEffect::CalculateSpellMod function, to allow non-default amount calculation
  * AreaAura updates are done in owner _UpdateSpells cycle
  * Since now you don't need to wait an aura update cycle to get area aura applied on it's correct target list
  * And you can access area aura target list
  * Add basic support for aura amount recalculation
  * Save recalculation state and base amount of auras to db
  * Add AuraEffect::CalculatePeriodic function to determine if aura is periodic, and to set correct tick number after aura is loaded from db
  * Add ChangeAmount function in addition to SetAmount function, to allow easy reapplication of AuraEffect handlers on all targets
  * Sort aura effect handlers in SpellAuras.cpp and .h by their use
  * Add check for already existing aura of that type to some AuraEffect handlers, to prevent incorrect effect removal
  * SPELL_AURA_CONVERT_RUNE and MOD_POWER_REGEN and MOD_REGEN hacky handlers are now implemented correctly
  * Send aura application client update only once per unit update - prevent unnecesary packet spam
 * Fix ByteBuffer::appendPackGUID function - it added additionall 0s at the end of the packet
 * Fix memory leak at player creation (not deleted auras)
 * Updated some naming conventions (too many to mention)
 * Added Unit::GetAuraOfRankedSpell() function
 * Remove procflags on aura remove, use Aura::HandleAuraSpecificMods instead
 * Added functions to maintain owned auras (GetOwnedAuras, GetOwnedAura, RemoveOwnedAura, etc)
 * Implement AURA_INTERRUPT_FLAG_LANDING
 * Implement EffectPlayerNotification (thanks to Spp)
 * Remove wrong aura 304 handler
 * Add better handler for death runes
 * Remove unnecesary variables from DynamicObject class, and cleanup related code, link dynobj duration with aura
 * Add GetAuraEffectTriggerTarget function in CreatureAi for special target selection for periodic trigger auras used in a script
 * Add many assert() procection from idiots using some functions in wrong way
 * I am to lazy to write here anything more
Thanks to Visagalis for testing this patch
PS: Do not make patches like this, please

--HG--
branch : trunk

src/game/Spell.h

@@ -363,6 +363,7 @@ class Spell
         void EffectPlayMusic(uint32 i);
         void EffectSpecCount(uint32 i);
         void EffectActivateSpec(uint32 i);
+        void EffectPlayerNotification(uint32 i);
         void EffectCastButtons(uint32 i);
         void EffectRechargeManaGem(uint32 i);
 
@@ -371,7 +372,7 @@ class Spell
         Spell( Unit* Caster, SpellEntry const *info, bool triggered, uint64 originalCasterGUID = 0, Spell** triggeringContainer = NULL, bool skipCheck = false );
         ~Spell();
 
-        void prepare(SpellCastTargets const* targets, AuraEffect* triggeredByAura = NULL);
+        void prepare(SpellCastTargets const* targets, AuraEffect const * triggeredByAura = NULL);
         void cancel();
         void update(uint32 difftime);
         void cast(bool skipCheck = false);
@@ -440,8 +441,7 @@ class Spell
 
         void HandleEffects(Unit *pUnitTarget,Item *pItemTarget,GameObject *pGOTarget,uint32 i);
         void HandleThreatSpells(uint32 spellId);
-        //void HandleAddAura(Unit* Target);
-
+        
         const SpellEntry * const m_spellInfo;
         int32 m_currentBasePoints[3];                       // cache SpellEntry::EffectBasePoints and use for set custom base points
         Item* m_CastItem;
@@ -492,7 +492,6 @@ class Spell
         void CleanupTargetList();
 
         void SetSpellValue(SpellValueMod mod, int32 value);
-        //void SetSpellValue(SpellValueMod mod, float value);
     protected:
 
         void SendLoot(uint64 guid, LootType loottype);
@@ -545,8 +544,8 @@ class Spell
         Item* itemTarget;
         GameObject* gameObjTarget;
         int32 damage;
-        Aura * m_spellAura; // only used in DoAllEffectOnTarget
-        DynamicObject *m_spellDynObj; // only used in DoAllEffectOnTarget
+        // used in effects handlers
+        Aura * m_spellAura;
 
         // this is set in Spell Hit, but used in Apply Aura handler
         DiminishingLevels m_diminishLevel;
@@ -566,8 +565,7 @@ class Spell
         uint32 m_procAttacker;                // Attacker trigger flags
         uint32 m_procVictim;                  // Victim   trigger flags
         uint32 m_procEx;
-        bool m_canTrigger;
-        void   prepareDataForTriggerSystem(AuraEffect * triggeredByAura);
+        void   prepareDataForTriggerSystem(AuraEffect const * triggeredByAura);
 
         //*****************************************
         // Spell target subsystem