Units inconsistency in the computation of Cherenkov Profiles

Created by: gondiaz

The two merging scripts for the Cherenkov Profiles are inconsistent in the units of distance:

In the last productions from @guiguem and @gondiaz, using gondiaz/compillation branch of the WCSimFQTuner, distance units are assumed to be in mm. Distance units in fiTQun are assumed to be in cm.

• merge_cprofile.py: wrong, not transforming units
• merge_cprofiles_parallel.py: correct, assumes units are in mm and transforms them to cm

In principle merge_cprofile.py is a deprecated script, as merge_cprofiles_parallel.py should be use on production.