*Fix Demonic Empowerment.

*Some code optimisations.
*Set formalCasterGuid for area auras correctly.

--HG--
branch : trunk

src/game/SpellAuras.h

@@ -107,18 +107,6 @@ class TRINITY_DLL_SPEC Aura
         bool IsRemoved() const { return m_isRemoved; }
         void SetUpdated(bool val) { m_updated = val; }
 
-        bool CanProc() const { return !m_procDeep; }
-        void SetCantProc(bool apply)
-        {
-            if(apply)
-                ++m_procDeep;
-            else
-            {
-                assert(m_procDeep);
-                --m_procDeep;
-            }
-        }
-
         bool IsPersistent() const;
         bool IsAreaAura() const;
         bool IsAuraType(AuraType type) const;
@@ -169,7 +157,6 @@ class TRINITY_DLL_SPEC Aura
         AuraEffect * m_partAuras[3];
 
         uint32 m_procDamage;                                // used in aura proc code
-        int32 m_procDeep;
 
         bool m_isDeathPersist:1;
         bool m_isRemovedOnShapeLost:1;