Maria Haupt / ctools

…served events in ctlike.

…erLM logger constructor interface (now takes a pointer instead of a reference).

…(see #1360 for details).

…)-function of individual ctools

…d scave() methods to ctool interface. Add read_ahead() method to handle reading of task parameters at the beginning of the task execution. Remove all m_read_ahead members from the derived classes.

…esponse for all CTA observation in the container that have not yet a response using the task parameters.

…bservation::hasresponse()

Still needs to be seen how the error computation can be switched off for recomputation.

Conflicts:
	ChangeLog
	scripts/cta_root2caldb.py
	src/ctlike/ctlike.par
	src/ctobssim/ctobssim.par

A new logic has been implemented concerning the caldb parameter. If the name specified by caldb is a directory, the directory is set as the root directory of the calibration database. The file specified by irf must then be a file provided within this root directory.

If the name is not a directory it is used as the mission name that is used to build the calibration directory path. The irf is then the response name.

GammaLib is undergoing a major interface change which requires adaption of the ctools code.