HepMC3 nightly branch fixes 04122020 part 9

Andrii Verbytskyirequested to merge
averbyts/athena:hepmc3_nightly_fixes_04122020_part_9 into master

In this MR:

  • Use C++11 loops for the HepMC3 compatibility
  • Use HepMC::GeNParticlePtr and similar typenames/typedefs
Edited by Andrii Verbytskyi

Merge request reports