relax SVN archive

Changed the catching when dw is zero, to use masked array.

Implemented backwards compability with unit tests.

Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.

Made the lib/cr72.py to a numpy multi dimensional numpy array calculation.

Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.

Restructured the calculation of R20A and R20B to the most efficient way.

Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.

Renamed dw temporary structure to generic structure.

Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.

Implemented the fastest way to calculate the dw structure.

This uses the numpy ufunc multiply.outer function to create the outer array, and then multiply
with the frqs_structure.

Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.

Yet another try to implement a fast dw structure method.

Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.

Simplified calculation.

Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.

First try to speed-up the old dw structure calculation.

Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.

Inserted temporary method to switch for profiling.

Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.

Started using the new way of constructing dw.

This is for running system tests.

Note, somewhere in the dw array, the frequencies will be different between the two implementations.
But apparently, this does not matter.

Task #7807 (https://gna.org/task/index.php?7807): Speed-up of dispersion models for Clustered analysis.