This difference arises from a different definition of the constant c... Basically, this only affects
the obtained F_eta value by dividing it by a factor of sqrt(3) independent of the magnetic field.
Hence, consitency evaluation was fine before this correction, except that values were multiplied by
sqrt(3).
Also, the test-suite values for F_eta were changed so the test still passes.
These changes follow a thread started at:
https://mail.gna.org/public/relax-devel/2008-06/msg00013.html
(message ID: 48626A6B.1010104@...)
and continued at:
https://mail.gna.org/public/relax-devel/2008-07/msg00001.html
(message ID: 486D13EB.1000100@...).
