Changed the lib function of NS CPMG 2site start, to get input of dw and r20a+r20b of higher dimensional type.
This is to move the main operations from the target function to the lib function, and make the API code clean and consistent.
Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.
Authored by: tlinnet 2014-06-15
Parent: [r23959]
Child: [r23961]
