Fix hundreds of std=c++11 compiler warningsAllow to change compiler settings in cmake/DD4hep.cmake valid for all packages.Watch out for CMAKE_CXX_FLAGS in cmake/DD4hep.cmake.Move to use Boost spirit::phoenix version 3. ---- Prepare for ROOT 6

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

Hopefully I got the assemblies right now. Assembly test added in examples/ClientTests. Please see also doc/release.notes

   for the cellID 

     combine all VolIDs from all parent volumes
     in the path to the current sensitive volume
    - used in Geant4CalorimeterSD and 
      Geant4TrackerSD

  
  - added new method:
    long long Geant4SensitiveDetector::getVolumeID(G4Step* step)
  
  - use it in Geant4Tracker(Calorimeter)SD
  
   - changed ILDExEventAction to extract the correct 
     readout string from lookup via cellID
 

Remove materials from LCDD. Look them directly up in the TGeoManager instance and avoid double caching.

  - added Property $Id$ to all *.h *.cpp and *.xml files
    to allow versioning with SVN

   filled from CopyNO
 - added edeposited to TrackerHit
 - reduced some debug printout
   (#define DEBUG 0)