fix for ROOT-6634: binary+ for Math::LorentzVector

## Changes in 4.7.1
1. Workaround for MathJax output - scaling not always works in Firefox
2. Fix - bin scaling for box draw option for TH2 and TH3 histograms
3. Fix - increase points limits for contour plots
4. Fix - position of 3D canvas in webkit browsers
5. Fix - use abs bin content in RMS calculations
6. Fix - support char star* and object arrays in I/O
7. Fix - correct decoding of TAxis time offset
8. Fix - checksum reading for foreign classes

## Changes in 4.7.0
1. Implement simple TTree::Draw over single leaf (#80)
   Support basic types, fixed-size arrays and several vector types
2. Display of TEveTrack(s) and TEvePointSet(s) over drawn geometry (drag
and drop)
   Also browsing, toggling, highlight of tracks and hits are done.
3. Let set default geo colors as TGeoManager::DefaultColors() does
4. Let use original ROOT macros to configure visibility of geometry
volumes. Like:
     &file=files/alice2.root&item=Geometry;1&opt=macro:macros/geomAlice.C
   One can set default colors or colors/transperency for selected
volumes.
   Also volume, selected for drawing in the macro, will be used in the
JSROOT
5. Support drawing of TH2Poly class with 'col' and 'lego' options
6. Implement 'CONT', 'ARR' and 'SURF' draw options for TH2 class
7. Support basic drawing of TPolyLine class
8. Interactive axis zooming in 3D with mouse, very much like to 2D
9. Zooming and tool buttons via keyboards

Signed-off-by: Bertrand Bellenot <bertrand.bellenot@cern.ch>

## Changes in 4.7.1
1. Workaround for MathJax output - scaling not always works in Firefox
2. Fix - bin scaling for box draw option for TH2 and TH3 histograms
3. Fix - increase points limits for contour plots
4. Fix - position of 3D canvas in webkit browsers
5. Fix - use abs bin content in RMS calculations
6. Fix - support char star* and object arrays in I/O
7. Fix - correct decoding of TAxis time offset
8. Fix - checksum reading for foreign classes

## Changes in 4.7.0
1. Implement simple TTree::Draw over single leaf (#80)
   Support basic types, fixed-size arrays and several vector types
2. Display of TEveTrack(s) and TEvePointSet(s) over drawn geometry (drag
and drop)
   Also browsing, toggling, highlight of tracks and hits are done.
3. Let set default geo colors as TGeoManager::DefaultColors() does
4. Let use original ROOT macros to configure visibility of geometry
volumes. Like:
     &file=files/alice2.root&item=Geometry;1&opt=macro:macros/geomAlice.C
   One can set default colors or colors/transperency for selected
volumes.
   Also volume, selected for drawing in the macro, will be used in the
JSROOT
5. Support drawing of TH2Poly class with 'col' and 'lego' options
6. Implement 'CONT', 'ARR' and 'SURF' draw options for TH2 class
7. Support basic drawing of TPolyLine class
8. Interactive axis zooming in 3D with mouse, very much like to 2D
9. Zooming and tool buttons via keyboards

Signed-off-by: Bertrand Bellenot <bertrand.bellenot@cern.ch>