Previously for Gmsh geometries we checked the orientation of surface meshes

by comparing the orientation of a line element on the boundary w.r.t. its 
connected surface element. 

However, this fails when the 3D Delaunay changes the 1D mesh (since we don't 
recover it yet).

This commits changes the algorithm to use the OpenCASCADE code path (where
we just compare one normal, pointwise).