Operator:
- new method to setup the mesh: SetupCSXGrid()
- Most methods handling material and operator calculations are now protected.
- New method for accessing the material distribution.
Operator_Cylinder:
- overloaded SetupCSXGrid() handling cylindrical specialties
- This commit adds an additional line in alpha-direction
in case of a closed cylinder simulation. Thereby the material averaging
will be accurate at the alpha-interface
Signed-off-by: Thorsten Liebig <Thorsten.Liebig@gmx.de>