*Fix Gargoyle feeding behaviour - original patch by thenecromancer.

*Add SPELL_TARGET_TYPE_CONTROLLED for spell_script_target table for fast search of units(grid search skipped) and to prevent applying effects to not owned summons

--HG--
branch : trunk

src/game/SpellEffects.cpp

@@ -1936,11 +1936,30 @@ void Spell::EffectDummy(uint32 i)
                     bp = damage;
                 }
                 m_caster->CastCustomSpell(unitTarget,m_spellInfo->CalculateSimpleValue(1),&bp,NULL,NULL,true);
-                // Suicide
+                // Corpse Explosion (Suicide)
                 unitTarget->CastCustomSpell(unitTarget,43999,&bp,NULL,NULL,true);
                 // Set corpse look
                 unitTarget->SetDisplayId(25537+urand(0,3));
             }
+            // Runic Power Feed ( keeping Gargoyle alive )
+            else if (m_spellInfo->Id == 50524)
+            {
+                // No power, dismiss Gargoyle
+                if (m_caster->GetPower(POWER_RUNIC_POWER)<30)
+                    m_caster->CastSpell((Unit*)NULL,50515,true);
+                else
+                    m_caster->ModifyPower(POWER_RUNIC_POWER,-30);
+
+                return;
+            }
+            // Dismiss Gargoyle
+            else if (m_spellInfo->Id == 50515)
+            {
+                // FIXME: gargoyle should fly away
+                unitTarget->setDeathState(JUST_DIED);
+                m_caster->RemoveAurasDueToSpell(50514);
+                return;
+            }
             break;
     }