Property versioning system is broken

[kurethedead]

OOT_ObjectProperties right now uses an IntProperty to hold its current version. However, in Blender, properties whose values haven't been changed from the defaults do not preserve their values when the default is changed. I haven't checked in depth, but I think SM64 also has this issue. For data added through operators this isn't an issue as the version can be set on creation (ex. F3D material creation), but if a user creates empties without using Fast64 operators, then the version will not be preserved on future updates.