[IMPORTANT] Fixed bug in the altitude_range function
[IMPORTANT] Fixed bug in the altitude_range function

There was an error due to (lon, lat) vs (lat, lon) conventions: rpc
functions, and thus all our functions, use (lon, lat) while the
GeographicLib binaries use (lat, lon). We were calling the GeoidEval
binary on (lon, lat) coordinates instead of (lat, lon). As a
consequence, the offset to convert height above the geoid in height
above ellipsoid was incorrect.

MISS3D/s2p,MISS3D/s2p,mnhrdt/s2p,dyoussef/s2p,jmichel-otb/s2p,dyoussef/s2p,jmichel-otb/s2p,mnhrdt/s2p,jmichel-otb/s2p,dyoussef/s2p,MISS3D/s2p,carlodef/s2p,dyoussef/s2p,MISS3D/s2p,carlodef/s2p,jmichel-otb/s2p