Fix for forgetting to multiply frqs to power 2.
This was found by inspecting all print out before and after implementation.
New implementation of DPL94 now passes all system and unit tests.
Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.
Authored by: tlinnet 2014-06-12
Parent: [r23891]
Child: [r23893]
