IOVDbFolder: Use AthMessaging and fix setting of message level (!34816) · Merge requests · atlas / athena · GitLab

Frank Winklmeier requested to merge fwinkl/athena:iovdbfolder_msg into master Jul 16, 2020

Inherit from AthMessaging and set our own message level to the one from IOVDbSvc. This fixes a problem introduced with https://gitlab.cern.ch/atlas/athenaprivate1/-/merge_requests/16127#note_3634697 where it was no longer possible to set the OutputLevel of messages originating from IOVDbFolder.

Also some general code cleanup and fix a few cppcheck warnings.