header block insertion completed (except for Geometry, which is a special case because we need to acknowledge CLHEP code).

Insert new header comment block, remove old one, manually improve file comments (defines / implements), change brief function description to doxygen format, remove some outcommented code

Insert new header comment block, remove old one, manually improve file comments (defines / implements), change brief function description to doxygen format, remove some outcommented code

Insert new header comment block, remove old one, manually improve file comments (defines / implements), change brief function description to doxygen format, remove some outcommented code

Insert new header comment block, remove old one, manually improve file comments (defines / implements), change brief function description to doxygen format

manual editing of @brief ("defines ...", "implements ..."), removed multiple white lines

Lattice2DIFParameter now is a class, InterferenceFunction2DLattice is protected against zero denominator, fix in project file to correctly treat FP exceptions under mac/linux