This refactors the CMake build files to no longer manually call
the CMake functions for generating and linking the dicionairies.
One reason is to reduce boilerplate, the other is that it is now
no longer possible to have naming mismatches between the dictionary
generation arguments and linking function arguments which was causing
the race conditions we had in our build system.

This also now follows more strictly the separation between dependencies
like Math, Tree and Core and pure linking flags to external libraries.

ROOT_GENERATE_DICTIONARY allows to specify dependencies, but we currently
don't actually specify those. As we need this for getting the module
dependencies right (as we can't build missing modules on demand), we should
add those dependencies here. Then those dependencies propagate to the
rootcling invocation which will in the future also generate the C++ module
for the selected dictionary.

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>

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.

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.

Reestablish method TPythia6::Pytune  (see https://root.cern.ch/phpBB3/viewtopic.php?f=3&t=20399&p=87881#p87881)

Conflicts:
	bindings/pyroot/src/MethodProxy.cxx
	cmake/modules/RootConfiguration.cmake
	etc/http/files/main.htm
	etc/http/files/single.htm
	geom/geompainter/src/TGeoChecker.cxx
	graf2d/mathtext/inc/mathtext.h
	graf2d/mathtext/src/fontembed.cxx
	graf2d/mathtext/src/fontembedps.cxx
	graf2d/qt/inc/TQtCanvasPainter.h
	gui/qtgsi/src/TQRootCanvas.cxx
	hist/hist/src/TBackCompFitter.cxx
	hist/hist/src/TEfficiency.cxx
	hist/hist/src/TFractionFitter.cxx
	hist/hist/src/TGraphAsymmErrors.cxx
	hist/hist/src/TH2.cxx
	hist/hist/src/TH3.cxx
	hist/hist/src/TMultiDimFit.cxx
	hist/hist/src/TProfile.cxx
	hist/hist/src/TProfile2D.cxx
	hist/hist/src/TUnfoldBinning.cxx
	html/src/TDocParser.cxx
	math/foam/src/TFoam.cxx
	math/genvector/inc/Math/VectorUtil_Cint.h
	math/minuit2/inc/Minuit2/FumiliMaximumLikelihoodFCN.h
	math/minuit2/inc/Minuit2/FumiliStandardChi2FCN.h
	math/minuit2/inc/Minuit2/FumiliStandardMaximumLikelihoodFCN.h
	math/minuit2/inc/Minuit2/StackAllocator.h
	math/minuit2/src/TChi2ExtendedFCN.cxx
	math/minuit2/src/TChi2FCN.cxx
	math/minuit2/src/TFitterMinuit.cxx
	math/minuit2/src/TFumiliFCN.cxx
	misc/table/src/TTableDescriptor.cxx
	net/auth/src/rsaaux.cxx
	test/QpRandomDriver.cxx
	test/ios/RootBrowser/Src/Browser/Controllers/FileCollectionViewController.mm
	test/ios/RootBrowser/Src/Browser/Controllers/FileContentViewController.mm
	test/ios/RootBrowser/Src/Browser/Controllers/ObjectViewController.mm
	test/ios/RootBrowser/Src/Browser/Views/PadView.mm
	test/ios/RootBrowser/Src/CustomUI/RangeSlider.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/AxisFontInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/AxisInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/AxisLabelsInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/AxisTitleInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/FilledAreaInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/H1BinsInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/H1ErrorsInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/H1Inspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/InspectorWithNavigation.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/LineInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/MarkerInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/ObjectInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/PadInspector.mm
	test/ios/RootBrowser/Src/ObjectInspector/Controllers/PadTicksGridInspector.mm
	test/ios/Tutorials/PadOptionsController.mm
	test/ios/Tutorials/PadView.mm
	test/periodic/NdbMF.cxx
	test/periodic/NdbMTReacDesc.cxx
	test/periodic/NdbMTReactionXS.cxx
	test/periodic/NdbParticleList.cxx
	test/periodic/XSGui.h
	test/stressLinear.cxx
	test/stressRooFit_tests.cxx
	test/tcollbm.cxx
	test/vmatrix.cxx
	tutorials/eve/boxset.C
	tutorials/geom/geodemo.C
	tutorials/graphs/splines.C
	tutorials/hist/th2polyEurope.C
	tutorials/mc/CompareMasses.C
	tutorials/memstat/memstat.C

rootcling will write out ROOT files; that does not work for libCore and RIO
which instead use rootcling_tmp.
All other libraries use rootcling -rootbuild.
Rename ROOTCLINGTMP to ROOTCLINGSTAGE1; rootcling -rootbuild is ROOTCLINGSTAGE2.

By Thomas Ruf.

now the library names in the rootmaps are sane.
In addition, the creation of the tmva and genvector dicts was
simplified.

mechanism which does not involve rlibmap anymore but
rootcling instead.
Basically all the calls to the macro calling rlibmap have been
removed.

Signed-off-by: Danilo Piparo <danilo.piparo@cern.ch>
Signed-off-by: Fons Rademakers <Fons.Rademakers@cern.ch>

which happens through rootcling and not anymore through rlibmap.

Signed-off-by: Danilo Piparo <danilo.piparo@cern.ch>
Signed-off-by: Fons Rademakers <Fons.Rademakers@cern.ch>

on Linux turn-off the -Wl,--no-undefined linker flag when libPythia6 
is not provided at configure time.


git-svn-id: http://root.cern.ch/svn/root/trunk@41600 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@41056 27541ba8-7e3a-0410-8455-c3a389f83636

Add comment to clarify early return / "impossible" case.


git-svn-id: http://root.cern.ch/svn/root/trunk@41046 27541ba8-7e3a-0410-8455-c3a389f83636

in libPythia6 (generates unresolved symbol error).


git-svn-id: http://root.cern.ch/svn/root/trunk@40221 27541ba8-7e3a-0410-8455-c3a389f83636

- Added the following packages: oracle, mysql, odbc, gviz, fftw, pythia6,
  pythia8, unuran, table
- Changed the default values for the build options depending on platform
  such that they display correctly with cmake-gui or ccmake
- Fixed mathmore build on Windows
- Make histfactory depending on xml option


git-svn-id: http://root.cern.ch/svn/root/trunk@39577 27541ba8-7e3a-0410-8455-c3a389f83636

To make an out of source build do, assuming the source is in ~/root:
   mkdir ~/root-x8664
   cd ~/root-x8664
   ~/root/configure
   make
This is convenient to build e.g. 32 and 64-bit version from one source, but
also needed for cross-compilation, where it is now possible to build in
a special directory only the compile time tools, like rootcint for the
host architecture while the binary is build for the remote architecture
(like iOS).


git-svn-id: http://root.cern.ch/svn/root/trunk@36659 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@35918 27541ba8-7e3a-0410-8455-c3a389f83636