Added unit test for count_relax_times.
Regarding bug #21665, (https://gna.org/bugs/?21665) - Running a CPMG analysis with two fields at two delay times.
This follows the suggestion in: http://www.mail-archive.com/relax-devel@.../msg04993.html.
Authored by: tlinnet 2014-02-25
Parent: [r22303]
Child: [r22305]
