Code cleaning before migration to thread safe
Migrated V0Validator to thread safe
Code cleaning before start of migration to thread safe
Migrated V0Validator to thread safe (update)
Migrated TauTagValidation to thread safe
Migrated PerformanceAnalyser to thread safe
Migrated MuonDTDigis to thread safe
Migrated MuonSimHitsValidAnalyzer to thread safe
Migrated MixCollectionValidation to thread safe
Migrated CSCDigiValidation to thread safe
Migrated CSCRecHits to thread safe
Merge pull request #5984 from vanbesien/migration_of_DQM_to_thread_safe

Migration of a bunch of validation modules to the new DQM interfaces (2)