Merge branch 'master' of github.com:joschiwald/TrinityCore into spellscripts

Conflicts:
	src/server/game/Entities/Unit/Unit.cpp
	src/server/game/Spells/Auras/SpellAuraEffects.cpp
	src/server/game/Spells/Spell.cpp
	src/server/game/Spells/SpellEffects.cpp
	src/server/scripts/Spells/spell_paladin.cpp

src/server/scripts/Spells/spell_dk.cpp

@@ -761,6 +761,23 @@ class spell_dk_death_coil : public SpellScriptLoader
                 }
             }
 
+            SpellCastResult CheckCast()
+            {
+                Unit* caster = GetCaster();
+                if (Unit* target = GetExplTargetUnit())
+                {
+                    if (!caster->IsFriendlyTo(target) && !caster->isInFront(target))
+                        return SPELL_FAILED_UNIT_NOT_INFRONT;
+
+                    if (target->IsFriendlyTo(caster) && target->GetCreatureType() != CREATURE_TYPE_UNDEAD)
+                        return SPELL_FAILED_BAD_TARGETS;
+                }
+                else
+                    return SPELL_FAILED_BAD_TARGETS;
+
+                return SPELL_CAST_OK;
+            }
+
             void Register()
             {
                 OnCheckCast += SpellCheckCastFn(spell_dk_death_coil_SpellScript::CheckCast);