added createtopologyFromMSH to create Topology from list of triangles

Fixed error in line curvatures

about O(n^2) -> O(n*log(n)).

The bottleneck is now in the Smith normal form computation of the reduced
cell complexes, O(n^3).

- uniformize syntax for parFromPoint/XYZtoU (cf. versions in GFace)
- fix compile

Added ability to compute the "scalar potential cuts" for homology
generators using coreduction. Modified utils/misc/celldriver.cpp to
demonstrate this.

Added some more or less useful utility and experimental functions.
Numerious bug fixes.

added createTopology when Merging a MSH File and implemented discreteEdge

Modified utils/misc/celldriver.cpp example to demonstrate this.

fix tetgen from Hang

interpolation (which prevent geo transforms on extruded entities)