JetEvent: thread-checker fixes
Several fixes to get rid of thread-checker warnings (but several less trivial-to-fix warnings still remain):
- make tagInfoStore non-mutable and methods modifying it non-const
- const/mutable fix for setConstituentSignalState
- make constant statics const
- JetMapBase: add const-correct accessors to pointer
- remove use of static in combinedLikelihood
Also delete unused GhostJet
class.
Edited by Frank Winklmeier