Added option for levelset cutting ""CutMeshTri(tag)", that saves only triangles and tets (no polygons or polyhedra)
Added new level set definition "Levelset Points(tag)={{x1,y1,z1},{x2,y2,z2}};", builds a level set from a set of data points using RBF interpolation

with tet meshes using pyramids.

It's not perfect (it introduces the pyramids in the extruded/transfinite mesh) but it's useful
nonetheless.

9625. In fact fullMatrix::invert doesn't work anymore when meshing with
high order (degree 3). I resize the matrix to avoid fatal error due to
bad result matrix size.

fullMatrix::copy and setAll updated to avoid bugs. copy may reallocate the matrix so it is prohibited for proxies.

Fix bug with restart file format

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