added the class PFitterFcnDKS which eventually will handle the DKS/GPU binding. Currently it is without real functionality

src/classes/PFitterFcn.cpp

@@ -41,16 +41,14 @@ using namespace std;
  * \param runList run list collection
  * \param useChi2 if true, a chisq fit will be performed, otherwise a log max-likelihood fit will be carried out.
  */
-PFitterFcn::PFitterFcn(PRunListCollection *runList, Bool_t useChi2)
+PFitterFcn::PFitterFcn(PRunListCollection *runList, Bool_t useChi2) :
+  fRunListCollection(runList),
+  fUseChi2(useChi2)
 {
-  fUseChi2 = useChi2;
-
   if (fUseChi2)
     fUp = 1.0;
   else
     fUp = 0.5;
-
-  fRunListCollection = runList;
 }
 
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