List of daughters was not populated so the InputHandling never passed anything to Geant4
The adding particles is done the same as in the LCIOEventReader

Improve the CMS example. Add word for the raw generator status of generator particles to Geant4Particle

Add test to dump hits from MultiSegment-MultiCollections example. Investigate issue: https://github.com/AIDASoft/DD4hep/issues/141 for details

 - changed signature of Geant4EventReader::readParticles(int,Vertex*, Particles&)
   to Geant4EventReader::readParticles(int,Vertices&, Particles& )
 - implement in LCIOEventReader, Geant4EventReaderHepEvt and Geant4EventReaderHepMC
 - for now still one vertex only is created using the first final state particle
   for HepEvt and LCIO

No code changes. Common code formatting removing tabs, replacing with spaces (tab-size=-2) + emacs reformatting.