Merge G4Initializer to G4RunManager

• G4RunManager is the only class which controls
  • G4State (except “pause”)
  • Open/Close geometry
  • Direct access to the “SetCuts” in G4UserParticleList
  • termination of G4 kernel
    • deletes EventManager, TrackingManager, SteppingManager, etc.
    • deletes UImanager, VisManager, etc.
  • And of course it handles
    • G4Run and associating “run persistent” objects
    • G4Event and associating “event persistent” objects

Introduce G4DigiManager invoked from G4RunManager

Some “Run persistent” classes associating with G4Run