Fix for installation when ROOTSYS is not defined (fix ROOT-5057)
Fix for installation when ROOTSYS is not defined (fix ROOT-5057)

tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot