Add atomic to mutable counters of MuidCaloTrackStateOnSurface

http://goetz.web.cern.ch/goetz/mutable_2019-06-10.html#Calo_Other

nightly/master/2019-06-10T2153:Reconstruction/MuonIdentification/MuidCaloScatteringTools/MuidCaloScatteringTools/MuidCaloTrackStateOnSurface.h +102

   100	    
   101	    // counters (for finalize)
   102	    mutable int					m_count;
   103	    mutable int					m_countArbitrarySolution;
   104	    mutable int					m_countCompleteFailure;
nightly/master/2019-06-10T2153:Reconstruction/MuonIdentification/MuidCaloScatteringTools/MuidCaloScatteringTools/MuidCaloTrackStateOnSurface.h +103

   101	    // counters (for finalize)
   102	    mutable int					m_count;
   103	    mutable int					m_countArbitrarySolution;
   104	    mutable int					m_countCompleteFailure;
   105	    mutable int					m_countInnerFailure;
nightly/master/2019-06-10T2153:Reconstruction/MuonIdentification/MuidCaloScatteringTools/MuidCaloScatteringTools/MuidCaloTrackStateOnSurface.h +104

   102	    mutable int					m_count;
   103	    mutable int					m_countArbitrarySolution;
   104	    mutable int					m_countCompleteFailure;
   105	    mutable int					m_countInnerFailure;
   106	    mutable int					m_countOuterFailure;
nightly/master/2019-06-10T2153:Reconstruction/MuonIdentification/MuidCaloScatteringTools/MuidCaloScatteringTools/MuidCaloTrackStateOnSurface.h +105

   103	    mutable int					m_countArbitrarySolution;
   104	    mutable int					m_countCompleteFailure;
   105	    mutable int					m_countInnerFailure;
   106	    mutable int					m_countOuterFailure;
   107	};
nightly/master/2019-06-10T2153:Reconstruction/MuonIdentification/MuidCaloScatteringTools/MuidCaloScatteringTools/MuidCaloTrackStateOnSurface.h +106

   104	    mutable int					m_countCompleteFailure;
   105	    mutable int					m_countInnerFailure;
   106	    mutable int					m_countOuterFailure;
   107	};
   108