Prompted by needs in polyhedral FF computation, rework BasisVector3D.

Core/Algorithms/inc/LayerDWBASimulation.h

Core/Algorithms/src/Beam.cpp

Core/Algorithms/src/IInterferenceFunctionStrategy.cpp

Core/Algorithms/src/LayerDWBASimulation.cpp

Core/Algorithms/src/MatrixSpecularInfoMap.cpp

Core/Algorithms/src/RectangularDetector.cpp

Core/Algorithms/src/ScalarSpecularInfoMap.cpp

Core/Algorithms/src/SimulationElement.cpp

Core/Algorithms/src/SpecularSimulation.cpp

Core/Algorithms/src/SphericalDetector.cpp

Core/Geometry/inc/BasicVector3D.h

Core/Geometry/src/BasicVector3D.cpp

Core/Samples/src/Lattice.cpp

Core/Tools/inc/Bin.h