Scripts/Icecrown Citadel: Add script for Deathbringer Saurfang (only missing alliance outro due to need of spawning and moving a transport)

Scripts/Icecrown Citadel: Corrected Lord Marrowgar, should no longer target tanks with Bone Spike Graveyard, his Coldflame should now spread properly
Core/Scripts: Moved Lady Deathwhisper Mana Barrier handler to scripts
Core/Scripts: Allow AuraScript to prevent default effects by effect index
Core/Scripts: Added Is25ManRaid() method to ScriptedAI, obviously used to check if raid is 25man
Core/Achievements: Pass m_caster to UpdateAchievementCriteria for ACHIEVEMENT_CRITERIA_TYPE_BE_SPELL_TARGET

--HG--
branch : trunk

sql/base/world_database.sql

@@ -14800,8 +14800,20 @@ INSERT INTO `spell_script_names` (`spell_id`,`ScriptName`) VALUES
 ( 70834, 'spell_marrowgar_bone_storm'),
 ( 70835, 'spell_marrowgar_bone_storm'),
 ( 70836, 'spell_marrowgar_bone_storm'),
+( 70842, 'spell_deathwhisper_mana_barrier'),
 ( 70903, 'spell_cultist_dark_martyrdrom'),
 ( 71236, 'spell_cultist_dark_martyrdrom'),
+( 72202, 'spell_deathbringer_blood_link'),
+( 72178, 'spell_deathbringer_blood_link_aura'),
+( 72371, 'spell_deathbringer_blood_power'),
+( 72409, 'spell_deathbringer_rune_of_blood'),
+( 72447, 'spell_deathbringer_rune_of_blood'),
+( 72448, 'spell_deathbringer_rune_of_blood'),
+( 72449, 'spell_deathbringer_rune_of_blood'),
+( 72380, 'spell_deathbringer_blood_nova'),
+( 72438, 'spell_deathbringer_blood_nova'),
+( 72439, 'spell_deathbringer_blood_nova'),
+( 72440, 'spell_deathbringer_blood_nova'),
 -- quest
 ( 45449, 'spell_q11587_arcane_prisoner_rescue'),
 ( 46023, 'spell_q11730_ultrasonic_screwdriver'),