a result; ideally it should not at all change the internal state;
  definitely it should not store the result.
Comments, layout.

This reverts commit e202d1ef.

Status: FitTest02 fails.

Conflicts:
	Core/Tools/inc/MathFunctions.h

Status:
- python test_all.py C++ passes
- Python interface broken because .h-Files in Geometry changed

Conflicts:
	Core/PythonAPI/src/Bin1D.pypp.cpp
	Core/PythonAPI/src/Bin1DCVector.pypp.cpp
	Core/Samples/inc/HomogeneousMaterial.h
	Core/Samples/inc/IMaterial.h
	Core/Samples/src/IMaterial.cpp
	Tests/FunctionalTests/TestCore/IsGISAXS06/IsGISAXS06.cpp
	Tests/FunctionalTests/TestCore/IsGISAXS09/IsGISAXS09.cpp
	Tests/FunctionalTests/TestCore/README

- speed as before
- App --isgisaxs07 shows huge difference, but fu.test passes

Extended print() methods.

Ex #09b still fails.

Conflicts:
	Core/Core.pro
	Core/PythonAPI/src/FormFactorBox.pypp.cpp
	Core/PythonAPI/src/FormFactorCrystal.pypp.cpp
	Core/PythonAPI/src/FormFactorCylinder.pypp.cpp
	Core/PythonAPI/src/FormFactorDecoratorDebyeWaller.pypp.cpp
	Core/PythonAPI/src/FormFactorFullSphere.pypp.cpp
	Core/PythonAPI/src/FormFactorGauss.pypp.cpp
	Core/PythonAPI/src/FormFactorLorentz.pypp.cpp
	Core/PythonAPI/src/FormFactorParallelepiped.pypp.cpp
	Core/PythonAPI/src/FormFactorPrism3.pypp.cpp
	Core/PythonAPI/src/FormFactorPyramid.pypp.cpp
	Core/PythonAPI/src/FormFactorSphereGaussianRadius.pypp.cpp
	Core/PythonAPI/src/HomogeneousMaterial.pypp.cpp
	Core/PythonAPI/src/IFormFactorBorn.pypp.cpp
	Core/PythonAPI/src/IFormFactorDecorator.pypp.cpp
	Core/PythonAPI/src/IMaterial.pypp.cpp
	Core/PythonAPI/src/ParameterPool.pypp.cpp
	Core/Samples/inc/HomogeneousMaterial.h
	Core/Samples/inc/IMaterial.h
	Core/Samples/src/IMaterial.cpp
	Core/Tools/inc/MathFunctions.h
	Fit/Fit.pro
	Fit/PythonAPI/src/ndimdata_t.pypp.cpp