relax SVN archive

Updated the version number to relax 3.1.1.

Backported the relax 3.1.1 CHANGES file addition to trunk.

The command used was:
svn merge -r21934:21935 svn+ssh://bugman@.../svn/relax/tags/3.1.1 .

Updated the CHANGES file for relax version 3.1.1.

relax version 3.1.1.

This is a minor feature release which adds support the 'NS MMQ 3-site linear', 'NS MMQ 3-site',
'NS R1rho 3-site linear', and 'NS R1rho 3-site' relaxation dispersion models. There is also
improved support for R1rho data sets where multiple offsets and multiple spin-lock fields have been
collected for each spin.

Python 3 fixes for the relax_disp.r2eff_read_spin user function.

The check for the dispersion point column now only runs if that argument is set. In addition, the
offset column is now also being checked.

Removed a printout from the Relax_disp.test_r1rho_kjaergaard GUI test as this is fatal for Python 3.

Removed some debugging printouts accidentally committed in the last commit (r21930).

Bug fix for the dispersion grid_search_setup() optimisation function.

This function was not updated for the recent addition of the spin-lock or hard pulse offset
dimension in the specific_analyses.relax_disp.disp_data module (and hence all structures used by the
dispersion target functions). The loop_exp_frq_point() function call has been replaced by a
loop_exp_frq_offset_point() function call to allow the 'R2eff' model parameters to be looped over.

For more details, see the thread http://thread.gmane.org/gmane.science.nmr.relax.scm/19685. This
solution was mentioned at http://thread.gmane.org/gmane.science.nmr.relax.scm/19685/focus=4859.

Epydoc docstring fix for the lib.dispersion.ns_mmq_3site.r2eff_ns_mmq_3site_sq_dq_zq() function.

This allows the API to be compiled correctly.

Capitalised 'Python' in the IO redirection messages.