Cleaning tauc computation without changing meaning.  Fixing doxygen/LaTeX stuff.  [I am seeing that grounded ice just at the grounding line of outlet glaciers currently is getting (e.g. in searise-greenland) very high tauc from MohrCoulomb because NullTransport is delivering tillwat=0 for thermodynamic reasons.  Fixing the thermodynamics could be the issue but it is also possible that a special rule for such locations should apply back in MohrCoulomb (some kind of -slippery-grounding-lines rule).]
Important point: Ntil is bounded above by overburden pressure.