in ROOT6 there is only one kind of reflection information. For this
reason, also the neighbouring references to Reflex have been removed.

In case of VariableTransform.cxx, reformatted the whole file as it was
using 4 whitespaces indentation and had misleading indentation on the
bottom.

[core/winnt/src/TWinNTSystem.cxx:996]: (error) Invalid number of character '(' when these macros are defined: 'ROOTPREFIX'.
[html/src/TDocDirective.cxx:316]: (error) Invalid number of character '{' when these macros are defined: 'R__BEPAEPSTLICHERALSDERPAPST'.
[math/mathcore/src/Delaunay2D.cxx:30]: (error) Invalid number of character '{' when these macros are defined: 'HAS_CGAL'.

[graf2d/qt/src/TGQt.cxx:2817]: (error) Array 'shape[15]' accessed at index 15, which is out of bounds.
[graf2d/qt/src/TGQt.cxx:2818]: (error) Array 'shape[15]' accessed at index 16, which is out of bounds.
[graf2d/qt/src/TGQt.cxx:2841]: (error) Array 'shape[15]' accessed at index 15, which is out of bounds.
[net/http/civetweb/handle_form.inl:627]: (style) Array index 'd' is used before limits check.

[roofit/roostats/src/MetropolisHastings.cxx:153]: (style) Condition 'i<1000' is always true

[graf2d/qt/src/TQtClientGuard.cxx:289]: (warning) Assert statement modifies 'thisPix'.

[roofit/roofitcore/src/BidirMMapPipe.cxx:906]: (style) Throwing a copy of the caught exception instead of rethrowing the original exception.
[roofit/roofitcore/src/BidirMMapPipe.cxx:972]: (style) Throwing a copy of the caught exception instead of rethrowing the original exception.
[roofit/roofitcore/src/BidirMMapPipe.cxx:1394]: (style) Throwing a copy of the caught exception instead of rethrowing the original exception.
[roofit/roofitcore/src/BidirMMapPipe.cxx:1429]: (style) Throwing a copy of the caught exception instead of rethrowing the original exception.

[graf3d/eve/src/TEveElement.cxx:1745]: (style) Exception should be caught by reference.
[roofit/histfactory/src/hist2workspace.cxx:76]: (style) Exception should be caught by reference.
[roofit/histfactory/src/hist2workspace.cxx:97]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooClassFactory.cxx:786]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:413]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:484]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:526]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:568]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:588]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:629]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:642]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:681]: (style) Exception should be caught by reference.
[roofit/roofitcore/src/RooFactoryWSTool.cxx:859]: (style) Exception should be caught by reference.
[tmva/tmva/src/CostComplexityPruneTool.cxx:131]: (style) Exception should be caught by reference.
[tmva/tmva/src/CostComplexityPruneTool.cxx:142]: (style) Exception should be caught by reference.
[tmva/tmva/src/DataSet.cxx:173]: (style) Exception should be caught by reference.
[tmva/tmva/src/Reader.cxx:636]: (style) Exception should be caught by reference.
[tmva/tmva/src/Reader.cxx:702]: (style) Exception should be caught by reference.
[tmva/tmva/src/VariableGaussTransform.cxx:751]: (style) Exception should be caught by reference.

[io/sql/src/TSQLStructure.cxx:1931] -> [io/sql/src/TSQLStructure.cxx:1933]: (warning) Identical condition 'len==0', second condition is always false

[net/monalisa/src/TMonaLisaWriter.cxx:956] -> [net/monalisa/src/TMonaLisaWriter.cxx:957]: (error) Iterator 'iter' used after element has been erased.
[proof/proofd/src/XrdProofdProofServMgr.cxx:4648] -> [proof/proofd/src/XrdProofdProofServMgr.cxx:4646]: (error) Iterator 'iter' used after element has been erased.

[math/minuit2/src/Minuit2Minimizer.cxx:669] -> [math/minuit2/src/Minuit2Minimizer.cxx:669]: (style) Same expression on both sides of '||'.
[math/minuit2/src/Minuit2Minimizer.cxx:736] -> [math/minuit2/src/Minuit2Minimizer.cxx:736]: (style) Same expression on both sides of '||'.
[math/minuit2/src/Minuit2Minimizer.cxx:753] -> [math/minuit2/src/Minuit2Minimizer.cxx:753]: (style) Same expression on both sides of '||'.

[tree/tree/src/TBasket.cxx:852]: (style) Redundant condition: If 'flag >= 80', the comparison 'flag' is always true.
[misc/table/src/TFileIter.cxx:467] -> [misc/table/src/TFileIter.cxx:468]: (warning) Identical condition 'thisRunNumber<runNumber', second condition is always false

[math/mathcore/src/TMath.cxx:826]: (style) Array index 'ia' is used before limits check.
[math/mathcore/src/TMath.cxx:830]: (style) Array index 'ib' is used before limits check.
[math/mathcore/src/triangle.c:15434]: (style) Array index 'aspectindex' is used before limits check.
[roofit/roofit/src/RooIntegralMorph.cxx:375]: (style) Array index 'igapHigh' is used before limits check.

[core/winnt/src/TWinNTSystem.cxx:5035]: (style) Statements following return, break, continue, goto or throw will never be executed.
[tree/treeplayer/src/TSelectorDraw.cxx:380]: (style) Statements following return, break, continue, goto or throw will never be executed.

[net/auth/src/TAuthenticate.cxx:4205]: (error) Resource leak: fd
[roofit/roofitcore/src/BidirMMapPipe.cxx:1880]: (error) Memory leak: s
[tree/tree/src/TLeaf.cxx:222]: (error) Memory leak: countname
[tree/tree/src/TLeaf.cxx:226]: (error) Memory leak: countname
[tmva/tmva/src/MethodBase.cxx:2783]: (error) Memory leak: pdfS
[tmva/tmva/src/MethodBase.cxx:2783]: (error) Memory leak: pdfB

[roofit/roofitcore/src/RooAbsArg.cxx:280]: (style) Redundant checking of STL container element existence before removing it.

[core/dictgen/src/rootcling_impl.cxx:457]: (performance) Possible inefficient checking for 'fieldSelRules' emptiness.
[core/dictgen/src/rootcling_impl.cxx:4573]: (performance) Possible inefficient checking for 'filesIncludedByLinkdef' emptiness.
[gui/canvaspainter/v7/src/TCanvasPainter.cxx:322]: (performance) Possible inefficient checking for 'fWebConn' emptiness.
[gui/canvaspainter/v7/src/TCanvasPainter.cxx:374]: (performance) Possible inefficient checking for 'fCmds' emptiness.
[gui/canvaspainter/v7/src/TCanvasPainter.cxx:419]: (performance) Possible inefficient checking for 'fWebConn' emptiness.
[gui/canvaspainter/v7/src/TCanvasPainter.cxx:475]: (performance) Possible inefficient checking for 'fWebConn' emptiness.
[gui/canvaspainter/v7/src/TCanvasPainter.cxx:587]: (performance) Possible inefficient checking for 'fCmds' emptiness.
[gui/canvaspainter/v7/src/TCanvasPainter.cxx:787]: (performance) Possible inefficient checking for 'fCmds' emptiness.
[html/src/TDocParser.cxx:684]: (performance) Possible inefficient checking for 'currentType' emptiness.
[proof/proofd/src/XrdProofdManager.cxx:804]: (performance) Possible inefficient checking for 'uwrks' emptiness.
[proof/proofd/src/XrdProofdSandbox.cxx:467]: (performance) Possible inefficient checking for 'staglst' emptiness.
[proof/proofd/src/XrdProofdSandbox.cxx:571]: (performance) Possible inefficient checking for 'actln' emptiness.
[roofit/roofitcore/src/RooSimWSTool.cxx:574]: (performance) Possible inefficient checking for 'slist' emptiness.

all the reports Prefer prefix ++/-- operators for non-primitive types

ClassImp is a macro defined in Rtypes.h. It can be written without trailing
semicolon. However, clang-format is based on lexing and it doesn't know at
all about preprocessors and how to expand macros. When visiting ClassImp(X)
it thinks this is not a completed entity (as it doesn't expand macros) and
considers the next line as continuation of the previous.

Inserting a semicolon fixes the issue and makes formatting with clang-format
in the ROOT codebase less tricky.

Many headers contains redundant header guards around #include directives:

    #ifndef ROOT_TTree
    #include "TTree.h"
    #endif

This patch removes the #ifndef's around these includes as they
don't serve any pratical purpose anymore and are no longer part
of the current ROOT coding convention.

This patch also fixes the 153 typos that are contained in the
symbols of the #ifndef directives.

Signed-off-by: Vassil Vassilev <vvasilev@cern.ch>

This reverts commit 5c076c6c.

This reverts commit b406328d, reversing
changes made to 318c7a47.

Make cannot deal with 'export *', they have to be escaped and fixed later on.

This is the recommended way of using the modules feature and should pave our way
of enabling -fmodules-local-submodules-visibility mode.

Use the standard #include <typeinfo> and #include <iosfwd> instead.

Our two build systems can generate almost entirely a modulemap file laying out
one module per library. Due to some non-modular implementation in ROOT's core we
still need to treat some header files specially.

This patch appends modular header files to the modulemap while skipping the
predefined ones. Configure-make relates all headers that are installed in
$ROOTSYS/include to their library whereas relates only headers which are part of
library's dictionary.

Skip (synthesized) tuples; fixes roottest @ C++14.

- Spell check