RooFit-based slave code working, just need to see what code can now be moved into the base class and make compilation of this class and example optional to avoid always linking against RooFit libs

git-svn-id: svn+ssh://phab.hepforge.org/source/laurasvn/branches/rf-slave@373 30227d83-a2f9-49e9-9e98-657c83b2c86a