added condition in the configuration file to check LHAPDF and NNPDF reweighting compatibility

git-svn-id: https://svnsrv.desy.de/basic/h1fitter/trunk@1589 b2a8d302-ca0a-427a-b7b9-081adbce06bc
NNPDF reweighting set to False by default, updating steering.txt.def

git-svn-id: https://svnsrv.desy.de/basic/h1fitter/trunk@1590 b2a8d302-ca0a-427a-b7b9-081adbce06bc
print log penalty term for each iteration only in debug mode

git-svn-id: https://svnsrv.desy.de/basic/h1fitter/trunk@1591 b2a8d302-ca0a-427a-b7b9-081adbce06bc