Add configuration for new ATLFASTIIF_G4MS Simulator
This merge request adds a new ISF configuration where Fatras is used to simulate particles in the ID, Fatras and FastCaloSim are used to simulate particles in the Calo and Geant4 is used to simulate particles in the MS.
In order to make this work cleanly I had to add a new ParticleBroker
ISF_Flag
to ensure the same particle broker instance is used everywhere. The configuration of existing simulators is unchanged in all my tests so far.
Edited by John Derek Chapman