Merge branch 'hepmc3_nightly_fixes_11122020_part_1' into 'master'

...ng/TrkValidation/TrkValEvent/TrkValEvent/GenParticleJet.h

...tion/TrkValInterfaces/TrkValInterfaces/ITruthNtupleTool.h

...Validation/TrkValTools/TrkValTools/GenParticleJetFinder.h

...TrkValidation/TrkValTools/TrkValTools/InDetHaloSelector.h

.../TrkValTools/TrkValTools/InDetPrimaryConversionSelector.h

...on/TrkValTools/TrkValTools/InDetReconstructableSelector.h

...ng/TrkValidation/TrkValTools/src/GenParticleJetFinder.cxx

Tracking/TrkValidation/TrkValTools/src/InDetHaloSelector.cxx

...lidation/TrkValTools/src/InDetReconstructableSelector.cxx

Tracking/TrkValidation/TrkValTools/src/TruthNtupleTool.cxx