GeographicLib 2.3

- GEOGRAPHICLIB_AUXLATITUDE_ORDER : AuxLatitude.hpp
- GEOGRAPHICLIB_DATA : Geoid.cpp, GravityModel.cpp, MagneticModel.cpp
- GEOGRAPHICLIB_DEPRECATED : Constants.hpp
- GEOGRAPHICLIB_EXPORT : Constants.hpp
- GEOGRAPHICLIB_GEODESIC_ORDER : Geodesic.hpp
- GEOGRAPHICLIB_GEOID_DEFAULT_NAME : Geoid.cpp
- GEOGRAPHICLIB_GEOID_PGM_PIXEL_WIDTH : Geoid.hpp
- GEOGRAPHICLIB_GRAVITY_DEFAULT_NAME : GravityModel.cpp
- GEOGRAPHICLIB_HAVE_LONG_DOUBLE : Math.hpp
- GEOGRAPHICLIB_MAGNETIC_DEFAULT_NAME : MagneticModel.cpp
- GEOGRAPHICLIB_PANIC : Math.hpp
- GEOGRAPHICLIB_PRECISION : Math.hpp
- GEOGRAPHICLIB_RHUMBAREA_ORDER : Rhumb.hpp
- GEOGRAPHICLIB_TRANSVERSEMERCATOR_ORDER : TransverseMercator.hpp
- GEOGRAPHICLIB_VOLATILE : Math.hpp
- GEOGRAPHICLIB_WORDS_BIGENDIAN : Math.hpp