Fabio Iocco / ctools

cspull now loops over all model components and call cterror for each model component.

Conflicts:
	ChangeLog
	NEWS
	src/ctbkgcube/ctbkgcube.cpp
	test/test_ctools.sh

…in case that those are not provided in the event list.

We cannot use the ctool base class for the Python scripts as this is an abstract class an Python does not know the concept of abstract classes. Hence for Python we need a real class to derive from, which we implement by adding the cscript class to the ctool.i interface.

… GCTAExposure to GCTACubeExposure and GCTAMeanPsf to GCTACubePsf).

…)-function of individual ctools

The script was adapted to comply to Python 3.x syntax.

Conflicts:
	pyext/setup.py.in

…odel with a standard diffuse cube background model that can be used for stacked analysis. The model container can be either retrieved using the models() method, or it can be written to disk with the save() method.