Modified the relax_disp.cpmg_frq user function to match relax_disp.spin_lock_field.
Both the front and back ends now use the same logic as the relax_disp.spin_lock_field user function and will allow some sanity to the analysis specific code.
Authored by: bugman 2013-04-03
Parent: [r19335]
Child: [r19337]
