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
DB record to store Tracker parameters
Forward port from 62xSLHC
Fill in tracker parameters in a structure
Add new objects
Add option to switch between hierarchy and averaging constraints in MP-based tracker alignment

The default behaviour is now to use averaging constraints after
problems with the fit convergence have been found when using
hierarchy constraints. This is explained in more detail in this
presentation by C. Kleinwort,

https://indico.cern.ch/event/337178/session/0/contribution/5/material/slides/0.pdf

Note that the implementation of the averaging constraints is still
approximate for the time being, but adequate for current purposes
and superior to the current version of the hierarchy constraints.
TriggerRatesMonitor: fix booking of L1 Tech trigger rate plots
Additional HLT Integrations Post Frozen Version For Steam
Update comments
Add (empty) default constructors to heppy::Hemisphere and heppy::HemisphereViaKt to be used in Reflex dictionary creation.