relax SVN archive

Disabled the Relax_disp.test_r1rho_on_res_fixed_time_m61b system test as the 'M61b' model is rubbish!

The model cannot be properly optimised as the parameters are not independent of each other.

Basic fix for the checks of the Relax_disp.test_hansen_cpmgfit_input user function.

The 'tex' parameter is now set as 'Tau'.

Fix for the cpmgfit script for an edit accidentally committed at r20033.

Updated the CPMGFit results for the IT99 grid search fixes of the last commit.

Fixes for the relax_disp.cpmgfit_input user function for the IT99 model grid search options.

Updated the relax results for Flemming Hansen's CPMG data for the IT99 model fixes.

Fixes for the lib.dispersion.it99 module.

This is mainly because the omega_1eff parameter was not being correctly converted from the nu_cpmg
values.

Fixed the scaling of the parameter tex.

Updated the CPMGFit results for the IT99 model using Flemming Hansen's CPMG data.

Replaced '-' with 'N/A' if the software is missing the model.

This is for the software comparison table using Flemming Hansen's CPMG data.