from Gabriel: rename Set/CanRebin Set/CanExtend

hist/hist/inc/TAxis.h

hist/hist/inc/TH1.h

hist/hist/inc/TProfile.h

hist/hist/inc/TProfile2D.h

hist/hist/inc/TProfile3D.h

hist/hist/src/TAxis.cxx

hist/hist/src/TH1.cxx

hist/hist/src/TH2.cxx

hist/hist/src/TH3.cxx

hist/hist/src/TProfile.cxx

hist/hist/src/TProfile2D.cxx

hist/hist/src/TProfile3D.cxx

hist/hist/src/TProfileHelper.h

math/minuit2/src/TMinuit2TraceObject.cxx

test/stressHistogram.cxx

test/stressShapes.cxx

tutorials/hist/hlabels1.C

tutorials/hist/hlabels2.C