Moved the multi dimensional expansion of inv_relax_times out of for loop.
This can be done for all structures, which does not have missing points.
Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.
Authored by: tlinnet 2014-06-12
Parent: [r23894]
Child: [r23896]
