For now, this is just an implementation details, no need
to expose it to the user.

This new libCling library is loaded in TROOT::InitInterpreter().
By moving all LLVM dependencies to libCling the LLVM symbols are not
exported to other parts of the program and linking with libCore does
not force the ROOT version of LLVM on its users. Also libCling does
solve the LLVM globals initialization order to the time libCling gets
loaded.

We want to hide their symbols from libCore, thus they must not be visible.

The attached patches add the following classes:
TSQLiteResult
TSQLiteRow
TSQLiteServer
TSQLiteStatement
and corresponding integration into both the ROOT-buildsystem and cmake.
Naturally, also the macro for the plugin-manager is included.
Patches supplied for ROOT 5.34.08 and current master (as SQL-part is
rarely changing, this statement should stay valid at least for some months).

Some usage notes:

* The handed path is evaluated as URI by sqlite3, which means it can be
  a relative or absolute path and can even contain additional settings
  as "URI" parameters, which are described in the SQLite-documentation.
* Functions "{Create,Select,Drop}
  DataBase(s)", "Reload", "Shutdown" are not implemented as SQLite
  operates on one DB per file only. The implemented stub methods return
  appropriate error results.
* "TSQLiteServer::GetColumns()" is not implemented (i.e. returns error
  and value 0): This is sadly not possible via a query in SQLite by
  their API design. This also means the TableInfo-objects cannot be queried.
* The result-row-count of a TSQLiteResult is always -1, as SQLite does
  not know the number of result rows before all have been retrieved
  (a valid optimization for a file-only DBMS).

For the person reviewing this patch, please note that the indices of
bind_parameters in SQLite start from 1, while those for the result-columns
start from 0.

As this is a rather large featureset to cover and the software of our
experiment currently only uses a small subset of it (only 'reading'
statements, and no prepared statements), I also wrote a very simple
testing-tool which creates a new database with a table with 10 columns
of very different type, inserts some example data, and rereads that
data both using a simple Query() and using a prepared Statement().
This tool and a very short makefile to build it are also attached if
needed for the review-process. The tool uses the commands described
in the documentation of the abstract baseclass TSQLStatement to
simulate real-life behaviour.
Please note that tool is rather hacked-together without real error-handling,
as it is not meant for long-term usage, but might be helpful in the
review-process / adapted to a unit-test.

Apart from the mentioned specifics, nothing is really SQLite-only,
thus I did not change the documentation of the baseclass in the patch
(this documentation also lists all SQL-implementations). At least this
list in the documentation might be extended to make users aware of the
new implementation.

SQlite plugin provided by Oliver Freyermuth (o.f@cern.ch).

Provide git commit and branch info to the system. The methods:
   TROOT::GetSvnRevision()
   TROOT::GetSvnBranch()
   TROOT::GetSvnDate()
have been replaced by:
   TROOT::GetGitCommit()
   TROOT::GetGitBranch()
   TROOT::GetGitDate()
Also the RVersion.h has changed and:
   ROOT_SVN_REVISION
   ROOT_SVN_BRANCH
has been replaced by:
   ROOT_GIT_COMMIT
   ROOT_GIT_BRANCH

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of "all".


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get the dict build into libCore. Support out of source build and get rid
of second makeonepch.sh that is now part of makeonepcm.sh.


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new Makefile target: distclean-xroot to clean all directories which build
xrootd plugins.


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- Remove CINT
- Update configure to not have CINT references
- Update Makefile to not have CINT references
- Remove all references to G__BIT_xxxx
More cleaning in next rounds.


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run when something has been checked into the interpreter/llvm tree.


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and in case of Cling. In Cling case there is still a startup issuse, to be
fixed next.


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singleton gROOT is created after all LLVM globals in libCore have been
initialized.


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__true64.


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implies old run-times. This extends the lease of life of ROOT a bit for
people with really old setup. Fixes issue 97448.


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When statically linking and .o, we must list the .o and .a starting with the most dependent and ending with the least dependent.  Leaf node at the end.  This will insure that the lowest level library (listed at the end, right!) will be initialized first (hence now GetROOT is called _after_ initializing LLVM and clang and cling and clack.  Yes, the linked will schedule the initialization of the last mentioned library first, i.e. from end to start of the link line.  With this change, we can start root.exe with cling enabled (this or a similar fix should solve PyROOT order of initialization issue.


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* no need to export libcling's (and thus clang's) symbols that are used in TCintWithCling.
* properly hides clang, llvm symbols (they are now unreachable through ROOT)
* rootcling_tmp doesn't need to find libCling.so anymore

The order of static initialization is (as always) fragile but relevant, as TCintWithCling is created during static init, but it needs parts of llvm to be set up before. Re-ordering of $(CLINGLIBEXTRA) versus $(COREO) fixes that for me.


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External cling can still be used by specifying --with-llvm-config option.


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native Cocoa backend will be build by default. To build X11 backend, install
XQuartz and configure with ./configure --disable-cocoa. On OSX < 10.8 X11
backend is still default and Cocoa backend can be build using the 
--enable-cocoa configure flag.


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interface to the OpenCascade (http://www.opencascade.org/) CAD system,
allowing ROOT TGeo geometries to be exported as CAD Step files.


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makehtml.sh: Add doc/reminder about not using -b
Makefile: html target really needs to depend on everything if we want all the documentation!


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