Up to potfit 0.6.0 the rescaling option was automatically enabled for all tabulated
potentials which supported it (EAM, ADP and MEAM). It could be disabled with the
noresc compilation flag.
With the release of potfit 0.7.0 it has been disabled by default and can be enabled
with the resc compilation flag.
Tip: This option is only available for tabulated potentials!