also remove where visited the $ statements in the files. They are useless, since git does not support them.
Fixed some tests, which no longer properly worked in the conditions area.

Support for multi-threaded Geant4 applications using DDG4Details are described in the release notes.

including DD4hepG4Plugins, DD4hepG4LCIO, DD4hepG4Legacy
DDTest: replace deprecated link_libraries by target_link_libraries

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

Improved version of MC particle handler, fix calorimeter hit aggregation with multiple contributions

Moved find_package calls to main cmakelists
moved include_directories to main cmakelists
only use dd4hep_generate_rootmap

   part of DD4hep, i.e. no external library option
   - however DDSegementationConfig is created for other packages to 
     build against it
 - changed library versioning of DDSegmentation to be in synch w/ DD4hep
   ( versions and so-versions)
 - some cleanup of geant4 stuff

   -D DD4HEP_USE_LCIO=1 ( -D LCIO_DIR=_lcio_install_dir_ )
     - LCIO_DIR is not needed when iLCSoft is initialized

   -D DD4HEP_USE_BOOST -D BOOST_ROOT=_path_to_boost_
 - client packages will automatically also use boost
   ( add_definition( DD4HEP_USE_BOOST ))