sixtracklib/common: update the convenience function to only use files not moved to tests/sictracklib/testlib
sixtracklib/common: update the convenience function to only use files not moved to tests/sictracklib/testlib

SixTrack/SixTrackLib,SixTrack/SixTrackLib,SixTrack/SixTrackLib,SixTrack/SixTrackLib