relax SVN archive

Added support for axis permutations in the frame order auto-analysis.

This is done by copying the data pipe of the already optimised pseudo-elliptic models, permuting the
axes, and performing another optimisation using all RDC and PCS data. This allows the second
solution for these pseudo-elliptic models to be found. The 2nd pipe is included in the model
selection step to allow the best solution for the model to be found.

Fix for the frame_order.permute_axes user function for the torsionless pseudo-ellipse.

This should have been part of the last commit.

The frame_order.permute_axes user function can now handle the torsionless pseudo-ellipse.

This model does not have the variable cdp.cone_sigma_max set.

Added systemtest Relax_disp.test_repeat_cpmg to be skipped, if no matplotlib module exists.

Task #7826 (https://gna.org/task/index.php?7826): Write an python class for the repeated analysis of dispersion data.

For the class of repeated analysis, implemented method to collect peak intensity, and function to plot the correlation.

Task #7826 (https://gna.org/task/index.php?7826): Write an python class for the repeated analysis of dispersion data.

Fix for two-point calculatation of exponential curve with corrupted data.

The two-point calculatation calculation is now also skipped, if the measured intensity is 0.
This can happen for corrupted intensity files.

Fix for calling correct folder with test intensities.

Task #7826 (https://gna.org/task/index.php?7826): Write an python class for the repeated analysis of dispersion data.

Extended the Frame_order.test_axis_permutation system test to check frame_order.permute_axes twice.

This will check that two calls to the frame_order.permute_axes user function will restore the
original parameter values.

Fix for the Frame_order.test_axis_permutation system test.

The motional eigenframe in the old log file was not exactly correct and did not correspond exactly
to the Euler angles in the cam_pseudo_ellipse.bz2 results file in
test_suite/shared_data/frame_order/axis_permutations/.

Implemented the frame_order.permute_axes user function.

This is used to switch between local minima in the pseudo-elliptic frame order models.