The checks in the model-free analyses for correct ri errors now prints out the spin ID string.
The previous errors only showed the spin number and name, causing confusion
(https://mail.gna.org/public/relax-users/2011-10/msg00001.html, Message-id:
<CAO2iSXGUNupwuz4s-gNdRAdB3i6zQCsuem2_EFjgHOPq+6SL5g@...>).
