Fix type of variable for histograms with large number of entries.
add new option -ncpu to root-config.

--ncpu reports the number of (hyperhtreaded) cores in a machine independent way.
use root-config --ncpu.
Doc update
In Print, use the fast screen copy for binary images when not in batch mode.
Move opaque was not properly working in case of X11.
Re-implement TMath::RMS using the two pass algorithm which is much more precise than the previous one-pass methods using the sum of squares. This method is maybe slightly precise than the Welford (Knuth) algorithm but at least  factor of 2 faster.
This fixes ROOT-5545
Improve CPU time measurement
Improve accuracy of expf
Fix a compiler warning
Avoid double cloning of histograms
fix commit 127aa29aee7bbf41be3b495821283ea7403af582 which prevents delete under certain circumstances
fix template specialisation after instantiation
Return 0 if the tab "name" was not found
Fix Jira issue #ROOT-6189

In TRootCanvas::SaveAs, change the default file type from ps to pdf
In TGFileDialog, when saving, set a default file name and its extension (if a specific one is selected)
and highlight the name so when the user types something, only the file name is changed
Thanks Axel for the suggestion and the useful feedback
Fix for ROOT-6208
Fix tree name identification when >1 levels of dirs

Fixes issue reported on the forum (http://root.cern.ch/phpBB3/viewtopic.php?f=13&t=17605)
Reset fCreateSelObj after by-object run

Fixes bug affecting repeated runs with mixed by-obj and by-file processing
(for example, stressProof failures of new by-file processing tests placed after
 test #28)
Add new test #29 testing trees in sub-dirs

Address the use case reported on the forum (http://root.cern.ch/phpBB3/viewtopic.php?f=13&t=17605)
Allow to change the plotting option for TMultiGraph from a TBrowser.