Merged refs/pull/6597/head from repository cms-sw
migration to multithread-friendly stream selector
migration to multithread friendly global producer
migration to multithread friendly global producer
migration to multithread friendly global producer
migration to multithread friendly global producer
migration to multithread friendly global producer
migration to multithread friendly global producer
migration to multithread friendly global producer
migration to multithread friendly global producer
Code cleaning
Merge pull request #6686 from mbluj/migration_to_multithread_friendly

Migration to multithread friendly modules