multi_g_rdf: corrected help and make --log, --soutput use the base name of --out
multi_g_rdf: corrected help and make --log, --soutput use the base name of --out

MrTheodor/csg,MrTheodor/csg,junghans/csg,MrTheodor/csg,junghans/csg,junghans/csg,votca/csg,votca/csg,junghans/csg,votca/csg,junghans/csg,votca/csg,MrTheodor/csg,junghans/csg,MrTheodor/csg