Implement CItem::GetID (#12, closes #31)
Implemented CPetActor and CPetSystem
Implemented SECTREE (closes #36)
Implemented CGuild::GetID and CGuild::GetName (#12)
Add GetEntitySet to SECTREE
Fixed CPetSystem alignment (missing vtable)
Implemented CHARACTER::GetPetSystem and IsPet

CHARACTER::GetPetSystem
CHARACTER::IsPet