functions_inverse.sh: bash-4.0 fix
functions_inverse.sh: bash-4.0 fix

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