First implementation of multithreading safe magnetic field access.

Control/PileUpComps/src/DigitizationAlg.cxx

Control/PileUpComps/src/PileUpToolsAlg.cxx

Control/PileUpComps/src/TestPileUpTool.cxx

Control/PileUpComps/src/TestPileUpTool.h

Control/PileUpTools/PileUpTools/IPileUpTool.h

Control/PileUpTools/PileUpTools/PileUpToolBase.h

DataQuality/DataQualityTools/CMakeLists.txt

...ity/DataQualityTools/DataQualityTools/DQTDetSynchMonAlg.h

...ty/DataQualityTools/DataQualityTools/DQTDetSynchMonTool.h

DataQuality/DataQualityTools/src/DQTDetSynchMonAlg.cxx

DataQuality/DataQualityTools/src/DQTDetSynchMonTool.cxx

...rs/AFP/AFP_Digitization/AFP_Digitization/AFP_PileUpTool.h

ForwardDetectors/AFP/AFP_Digitization/src/AFP_DigiTop.cxx

ForwardDetectors/AFP/AFP_Digitization/src/AFP_PileUpTool.cxx

...LFA/ALFA_Digitization/ALFA_Digitization/ALFA_PileUpTool.h

ForwardDetectors/ALFA/ALFA_Digitization/src/ALFA_DigiAlg.cxx

...dDetectors/ALFA/ALFA_Digitization/src/ALFA_PileUpTool.cxx

...ctors/LUCID/LUCID_Digitization/src/LUCID_Digitization.cxx

...tectors/LUCID/LUCID_Digitization/src/LUCID_PileUpTool.cxx

...Detectors/LUCID/LUCID_Digitization/src/LUCID_PileUpTool.h