CaloDetMgrDetDescrCnv code cleanup
Migrated CaloMgrDetDescrCnv to AthMessaging, and made a number of cosmetic and
stylistic changes in CaloMgrDetDescrCnv.cxx.
Dropped two obsolete python scripts:
CaloDetMgrDetDescrCnv/python/CaloDetMgrDDCnv.pyCaloDetMgrDetDescrCnv/share/CaloTTDetMgrDetDescrCnv_joboptions.py
and updated their clients.
Fixed broken TestLArDetDescr/share/TestCaloDDE_jobOptions.py
Edited by Vakhtang Tsulaia