TODO : avoid topological unconsistencies for (e.g.) cones when
delaunay meshing is involved.

IMPORTANT : 3D Delaunay Meshing now acts on connected volumes
	  separately, allowing to mesh regions that are not connected
	  topologically but that may intersect geometrically

Fopen deals with non-ASCII filename paths on Windows.

Removed the -q option in initial mesh generation (generates meshes that do not respect size field)

bug fixed in delaunay surface meshing with embedded edges
bug fixed in cross filed computation for non conformal mappings 

natural convection added in the incompressible code

a frame solver is made
changed INRIA MESH output
removed feaure in BL field
started to do MNT diagrams
 

hit anymore.

not yet finished ... mesh smoothing has to be adapted 

Frontal mesher is less sensitive to small geometrical features (avoid obtuse triangles)

major commit : frontal 2D algo now should be way better and work on any kind of surface, even with a super bad parametrization

fixed nasty bug in quad meshing
added parameters to BL generation (2D)