reapply 36310 now that snprintf is exposed to CINT

test/Event.cxx

test/EventMT.cxx

test/MainEvent.cxx

test/Tetris.cxx

test/bench.cxx

test/ctorture.cxx

test/stress.cxx

test/stressEntryList.cxx

test/stressFit.cxx

test/stressGUI.cxx

test/stressHistoFit.cxx

test/stressLinear.cxx

test/stressShapes.cxx

test/stressSpectrum.cxx

test/tcollbm.cxx

test/vmatrix.cxx

test/vvector.cxx