csg_stat: added blocking option
csg_stat: added blocking option

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