BETA program execution

1. The seed is set for the Geant4 random numbers.
2. G4VSteppingVerbose created
3. G4RunManager created
   1. G4VUserDetectorConstruction (BETADetectorConstruction) created
   2. G4VUserPhysicsList (BETAPhysicsList)
   3. G4UserRunAction (BETARunAction)
   4. G4UserRunAction (BETARunAction)
   5. G4VUserPrimaryGeneratorAction (BETAPrimaryGeneratorAction)
   6. G4UserEventAction (BETAEventAction)
   7. G4UserStackingAction (BETAStackingAction)
   8. G4UserSteppingAction (BETASteppingAction)
4. Interactive or script session invoked