Thread-safe DetDescrCnvSvc
make the external DetDescr_StorageType const in DetDescrCnvSvc for thread-safety. Remove the detStore() in DetDescrCnvSvc and DetDescrConverter since it's useless and may not thread-safe.
Edited by Ke Li
make the external DetDescr_StorageType const in DetDescrCnvSvc for thread-safety. Remove the detStore() in DetDescrCnvSvc and DetDescrConverter since it's useless and may not thread-safe.