math/octave-forge-geographiclib: new port.

Native Octave/MATLAB implementations of a subset of the C++ library,
GeographicLib. Key components of this toolbox are: (a) Geodesics,
direct, inverse, area calculations; (b) Projections, transverse
Mercator, polar stereographic, etc; (c) Grid systems, UTM, UPS, MGRS;
(d) Geoid lookup, egm84, egm96, egm2008 geoids supported; (e) Geometric
transformations, geocentric, local cartesian; (f) Great ellipse, direct,
inverse, area calculations.