[OSRS-PROJ] Donald Elliptic Projection for AT&T V&H Coordinates?

[Duncan Agnew]

There is a description of this projection at

http://openmap.bbn.com/doc/api/com/bbn/openmap/util/VHTransform.html
 
(at the bottom of the page). The code used is open-source (it appears)
and can be downloaded; go to http://openmap.bbn.com/ for information.

The actual conversion code contained inside the Java is from other sources,
and it is clear that this is something that even AT&T had difficulty 
sorting out later.

I leave it up to the more expert to add this to PROJ, and to reverse-
engineer the ellipsoid used.

Don't thank me, thank Google.

Duncan Agnew

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