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/Item/Item.h

@@ -211,6 +211,8 @@ enum ItemRequiredTargetType
 
 #define MAX_ITEM_REQ_TARGET_TYPE 2
 
+#define MAX_ITEM_SPELLS 5
+
 struct ItemRequiredTarget
 {
     ItemRequiredTarget(ItemRequiredTargetType uiType, uint32 uiTargetEntry) : m_uiType(uiType), m_uiTargetEntry(uiTargetEntry) {}