Introduce new package pyroot by Pere Mato & Wim Lawrijsen.

pyroot is a Python interface to any class having a CINT dictionary.
pyroot is an optional package. It can be selected at configure time with, eg
 --enable-explicitlink \
 --enable-python \
 --with-python-incdir=/usr/local/include/python2.3 \
 --with-python-libdir=/usr/local/lib/python2.3 \

enable-explicitlink is mandatory to build pyroot.

Note that python2.3 or above is required. You can download it from
http://www.python.org

The installation is currently certified only on Linux with gcc3.2.
python/ROOT tutorials are available in $ROOTSYS/tutorials/*.py.
To run the python tutorials, you can do
  setenv PYTHONDIR $ROOTSYS/pyroot:$ROOTSYS/lib
  cd $ROOTSYS/tutorials
  python hsimple.py


git-svn-id: http://root.cern.ch/svn/root/trunk@8699 27541ba8-7e3a-0410-8455-c3a389f83636