This patch - together with  cc884ecb832f025af4dd5eea0eb27ad017e76b0d - adds support fro XRootD version 4.
The bulk of the patch copes with the changes in the XRootD network classes to support IPv6. The rest is mostly
handling of the changes in packaging.
The PROOF part still uses the old XrdClient (still delivered with XRootD).

Conflicts:
	configure
	proof/proofd/src/XrdProofdNetMgr.cxx

By Bertrand.

Added new option 'sysinstall' to control the installation with CMake. Redefine various installation destinations. It should address issues ROOT-5753, ROOT-5755

on llvm 3.2svn). Mostly were:
warning: private field 'fOneDim' is not used [-Wunused-private-field]


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In xpdtest.cxx :
 - Use different technique for time outs
 - Add switch '-T timeout' contro the timeout value during connection
   or ping attempts (value in seconds)
 - Add switch '-p pidfile' to communicate the location of the process
   pid file; if this is defined, an existence check of the process is
   done before any other test
 - Add switch '-v' to set gDebug=1 where relevant
 - Make sure that the check for the esistence of the sandbox dir is only
   done when required, i.e. when the required test type is 2.

In man1/xpdtest.1:
 - Document new switches

In setxrd.sh:
 - Fix issue on zsh (see Savannah #99744)

In installXrootd.sh
 - Set default version 3.2.7


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- add -lMatrix to link of bin/xpdtest.


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this patch adds an executable ptest which can be used to test the
status of the daemon in 3 possible ways: ping, ping+start simple session
for default user, ping + start simple session for active users.
The idea is to use it with something like 'monit' or with a cron job.
This feature was requested by several admins and I believe is anyhow
something good to have.


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changes needed from introduction of cling and removal of cint.
There are still some problems, that will be fixed asap.


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  using namespace std;
from Riostream.h, which has huge consequences for all of ROOT.
Riostream.h is now a simple wrapper for fstream, iostream, iomanip for backward compatibility; Riosfwd.h simply wraps iosfwd.

Because of templates and their inline functions, Riostream.h needed to be included in headers, too (e.g. TParameter.h), which violated the assumption that Riostream.h is not exposing its using namespace std to headers.
ROOT now requires R__ANSISTREAM, R__SSTREAM, which does not change the set of supported compilers.

Without "using namespace std", several identifiers are now prefixed by std::; e.g. roofit/* source files now have a using namespace std to keep their coding style.
TFile::MakeProject() now generates "using namespace std" to convert the CINT-style class names into C++ ones.


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Avoid mistaking the end of file for a filename in a file list text file in hadd (This fixes http://root.cern.ch/phpBB3/viewtopic.php?t=14663)


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Fix coding convention R.RN7 (Avoid the raw C types 'long', 'unsigned long', 'long double', 'bool', 'long long' and 'unsigned long long'.)


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Add support for a command line test run of 'proofserv'. This is useful
to test that the environment is setup correctly.


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- Fixed the generation of roots and proofserv scripts
- Fixed the dependencies of FITSIO


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From Thiemo Nagel, remove duplicated line errorneously introduced by revision 41439 (see Savannah 88170)


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with their names (when running hadd, the TFileMerger message are prefixed by hadd):

$ hadd -v 0 -f output.root input1.root input2.root 
$ hadd -v 1 -f output.root input1.root input2.root 
hadd merged 2 input files in output.root.
$ hadd -v 2 -f output.root input1.root input2.root 
hadd target file: output.root
hadd Source file 1: input1.root
hadd Source file 2: input2.root
hadd Target path: output.root:/


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$ hadd -v 1 -f output.root input1.root input2.root 
Target file: output.root
Merged 2 input files.


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Shift the verbosity level passed to TFileMerger up down by one to allow for finer grain control in hadd.
Now:

$ hadd -v 0 -f output.root input1.root input2.root 
$ hadd -v 1 -f output.root input1.root input2.root 
Target file: output.root
$ hadd -v 2 -f output.root input1.root input2.root 
Target file: output.root
Source file 1: input1.root
Source file 2: input2.root
Target path: output.root:/


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   hadd -f output.root -T input1.root input2.root

to properly recognize the 'output.root' to be the output rather than input1.root
(i.e. previously the first argument after all the -* option was assumed to be
the output even if it was specified before hand).


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Add a new member function TFileMerger::SetMaxOpenedFiles and
new command line option to hadd ( -n requested_max ) to allow 
the user to reduce the number of files opened even further.


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Introduce alternative cmake based build system. Cmake is especially convenient
for building on Windows, as it can produce VC projects or nmake files and 
does not require cygwin to be installed. In addition on OSX Xcode projects
can be generated.


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Update (gut) hadd to rely on TFileMerger for everything
but the command line argument parsing.

Make the soft dependency on TH1 even softer.


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Add possibility to use an open file descriptor for logging without replaying
redirection. Used in the new startup sequence.


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of files (this fixes https://savannah.cern.ch/bugs/?79909).

In TObject::ls, add support for the option 'noaddr' which 
prevents the printing of the address of the object.   This
is useful in particular in roottest.   Use this in hadd
and TFileMerger


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