Removed the slow allclose() function to test if R20A and R20B is equal.
It is MUCH faster to just subtract and check sum is not 0.0.
Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.
Authored by: tlinnet 2014-06-11
Parent: [r23837]
Child: [r23839]