Magic numbers cleanup:

- Replace many magic numbers with constants
- Use enum for vehicle flags/seat flags
- Correct structure for ItemRandomSuffixEntry

--HG--
branch : trunk

src/server/game/Entities/GameObject/GameObject.cpp

@@ -1565,7 +1565,7 @@ void GameObject::CastSpell(Unit* target, uint32 spellId)
         return;
 
     bool self = false;
-    for (uint8 i = 0; i < 3; ++i)
+    for (uint8 i = 0; i < MAX_SPELL_EFFECTS; ++i)
     {
         if (spellInfo->EffectImplicitTargetA[i] == TARGET_UNIT_CASTER)
         {