PLEASE NOTE: that with this revision some prim related features may be broke for a while. (things like linking prims and the parcel prim count.)
Also this revision may not work on mono, but that will be fixed soon.
*Made the Parcel class its own file and moved the Parcel and LandManager into their own folder in Environment
*Some renaming might need to be done so the Parcel class doesn't have issues with the libsecondlife Parcel class, but Land doesn't seem right.
MW