- ARCHDEF: updated w.r.t ECMWF-CCA but still the HEADER_SIM is hardcoded for coupled experiment having three executable

Conflicts:
	src/check_ithaca.bash

Conflicts:
	src/autosubmit.py
	src/dir_config.py
	src/expid.py

Conflicts:
	src/change_pkl.py
	src/job/job_list.py

According to Mingu's explanations, the selection of cdftools can not be done in archdef but needs to be done in the templates. It is therefore necessary to create different entries CDFTOOLS2 and CDFTOOLS3 in the archdef