Remove the too coarse CanEditParcel method in favor of a CanEditParcelProperties
method that takes a GroupPowers argument to specify what action is to be
taken. Also, make the method to set parcel data much more granular. Permissions
in a deeded setting should now work.
* It does this by tweaking the throttles on child agent connection to a megaregion and multiplying the land throttle by 50. (various bit and byte magic ensue)
* While, I doubt this will cause terrain crater sized potholes.. since it actually increases the bandwidth available for land in child regions when MegaRegions area active, more testing would be good.
* This, in theory, also shouldn't cause missing objects in child regions.. because all objects are in the root region anyway. As I said, more testing would be good.
