relax SVN archive

Clean up of comment lines.

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

Replaced isnan mask with function that catches all invalid values.

Implemented masked replacement if fact is less that 1.0.

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

Bugfix for testing if kex is zero.

It was tested if kex was equal 1.0.

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

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.