A plain include_directories() was meant to be converted
into target_include_directories() in the previous commit,
but the second part was missing.

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.

The naming of the library in the two function calls ROOT_GENERATE_DICTIONARY
and ROOT_LINKER_LIBRARY was often not matching. This causes that
ROOT_LINKER_LIBRARY couldn't correctly set its dependencies to the output
file of ROOT_GENERATE_DICTIONARY and therefore causes race conditions in
the build system.

Note: We're attached all dependencies to a custom target, and
NOT to the output files generated by rootcling. This should mitigate
the race conditions we experience when multiple targets in different
Make jobs request the same output file as a dependency and then
suffer from this Make problem that is described here:
https://cmake.org/Bug/view.php?id=10082

This patch also adds a (commented out) piece of code that can print
warnings if we don't have a fitting G__*.cxx file for a
ROOT_LINKER_LIBRARY call. This is sometimes intended, so I didn't
enable this warning by default. We should enable this code
by default in the future once we have a way to express if we
intentionally don't provide the G__*.cxx file when calling
ROOT_LINKER_LIBRARY.

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.

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>

correct package name, fixes 92157.


git-svn-id: http://root.cern.ch/svn/root/trunk@43234 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