update the class to be consistent with the base EUTelTrackFitter class. remove hit and track vectors from here. rename fittrack to LCIOtrack for code readability
remove redundant header include
only one line changed! every thing code alignment. now, every event have to reset hit and track vectors of the base class.

+        _trackFitter->Clear();
now hit and track vectors are in the base class, no need to cast
hit and track vectors are in the base class, no need to cast. change default name of the output track collection
have to clear now at the begiing of every event the vase class hit and track vector collections