[Proj] Ellipsoid data sources

[Gerald I. Evenden]

Because I was refurbishing the GEOD_ELLIPS structure array of standard earth 
ellipse constants with its current 54 entries I seem to recall a seeing a 
list that may have been longer.  However browsing the normal list of suspects 
has turned up nothing.

Does anyone have info on a well vetted and comprehensive list of earth 
ellipsoid constants.

Thanks.

-- 
The whole religious complexion of the modern world is due
to the absence from Jerusalem of a lunatic asylum.
-- Havelock Ellis (1859-1939) British psychologist