ROOT5 / ROOT6 compatibility
Created by: moukaddam
The TSpectrum has changed the type of the returned position. See https://root.cern.ch/phpBB3/viewtopic.php?t=20802 for more details
in file /NPLib/Calibration/NPSiliconCalibrator.cxx the type of xpeaks must be changed if ROOT6 is in use: ROOT5 compatible: Float_t* xpeaks =(Float_t*) sp->GetPositionX(); ROOT6 compatible: Double_t* xpeaks =(Double_t*) sp->GetPositionX();