Merge branch 'master' of https://root.cern.ch/git/root

.gitattributes

interpreter/llvm/src/utils/llvm.natvis

js/JSRootIO/scripts/JSRootD3Painter.js

js/JSRootIO/scripts/JSRootIOEvolution.js

js/JSRootIO/scripts/rawinflate.js

js/JSRootIO/scripts/three.min.js

js/JSRootIO/style/dtree.css

math/mathmore/inc/Math/LinkDef_Func.h

.../histfactory/inc/RooStats/HistFactory/FlexibleInterpVar.h

roofit/histfactory/src/FlexibleInterpVar.cxx

roofit/histfactory/src/HistoToWorkspaceFactoryFast.cxx

roofit/roofit/inc/RooGaussian.h

roofit/roofit/inc/RooNovosibirsk.h

roofit/roofitcore/inc/RooAbsArg.h

roofit/roofitcore/inc/RooAbsCategory.h

roofit/roofitcore/inc/RooAbsData.h

roofit/roofitcore/inc/RooAbsOptTestStatistic.h

roofit/roofitcore/inc/RooAbsPdf.h

roofit/roofitcore/inc/RooAbsReal.h

roofit/roofitcore/inc/RooAbsString.h