relax SVN archive

Fix for the Mf.test_mf_auto_analysis system test on MS Windows.

The Fake_right_click.GetPosition() method now returns a valid position. This is the original
(10, 10) position.

The specific API calculate_r2eff() method for the dispersion analysis is now private.

This is not part of the API, so it must be made private for the test suite to pass.

Loosened the test_hansen_cpmg_data_to_ns_cpmg_2site_star_full system test for Mac OS X.

Even the calc user function does not help, the results are quite different between different systems.

Redesigned the Relax_disp.test_hansen_cpmg_data_to_ns_cpmg_2site_star_full system test.

The R2A and R2B rates cannot be distinguished for this data, therefore there was no unique solution.
This resulted in too much variability between 32 and 64-bit systems as well as different operating
systems. Instead a single calc user function call is used to determine the chi-squared value for a
fixed set of parameters.

Fixes for the calc user function for the dispersion analysis.

This now does something logical for the non-R2eff models. The chi-squared value is now being
calculated and stored. Previously this was only calculating the R2eff/R1rho values for fixed
relaxation time period data for the 'R2eff' model and failing for all others. Now the pre-existing
_back_calc_r2eff() method is used to back-calculate and store the chi-squared value.

The dispersion data return_cpmg_frqs() and return_spin_lock_nu1() functions are now safer.

These specific_analyses.relax_disp.disp_data module functions can now be called when no data is
present.

The dispersion GUI analysis cluster_update() method is now thread safe.

This removes many error messages when running the dispersion analysis in the GUI, especially for Mac
OS X systems.

More loosening of the Relax_disp.test_hansen_cpmg_data_to_ns_cpmg_2site_star_full system test.

This is now for 64-bit Mac OS X to pass.

Caught a divide by zero in the specific_analyses.relax_disp.disp_data.return_offset_data() function.

This was identified by turning all numpy warnings to errors.

Loosened the checks for the Relax_disp.test_hansen_cpmg_data_to_ns_cpmg_2site_star_full system test.

This is to allow the test to pass on 32-bit Linux systems.