Changeset 1580 for XIOS/trunk/extern/remap/src/earcut.hpp

Computation of the area of a polygon on the sphere :
The total area was obtain by triangulation of vertex with the barycenter of the polygons. for some pathological polygones, baricenter was outside or triangle side was cutting polygons side, leading to numerical imprecision.

Now the polygon is triangulate with by external lib (earcut), and correct area is computed in any case.

YM