These are the updates for the View manager properties. Removed the last of
items (within the viewer/viewmgr) hard coded to view number. Added support
for per view configuration of ground level nearplane value. Tower views look
very nice with little or no z-buffer problem in the models. Pilot offset
dialog can be used to move eye in all views.
lot, since otherwise a property that is never set or tied by
FlightGear itself will always be kept as a string and converted on
each access. That's why fgGetBool and friends could take up a lot of
processor time sometimes.
