Split the target function of model DPL94 into a func_DPL94 and calc_DPL94.
This is to prepare for a target function func_DPL94_fit_r1.
sr #3135(https://gna.org/support/?3135): Optimisation of the R1 relaxation rate for the off-resonance R1rho relaxation dispersion models.
Authored by: tlinnet 2014-08-04
Parent: [r24923]
Child: [r24925]
