Added the relax_time to collection of rr1rho_3d_rankN matrix collection.
This is to pre-multiply all elements with the time.
Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.
Authored by: tlinnet 2014-06-19
Parent: [r24166]
Child: [r24168]
