relax SVN archive

Preparatory change for the citations in the GUI.

Created a new citation for relax which concatenates both the d'Auvergne and Gooley 2008 papers.

This is to show to those who are unaware of back-to-back paper concatenation rules how to cite both
papers using one reference, saving a lot of space.

Added a sample_script to generate theta values for R1rho data.

Regarding sr #3124, (https://gna.org/support/index.php?3124) - Grace graphs production for R1rho analysis with R2_eff as function of Omega_eff.

The script is explained at the wiki: http://wiki.nmr-relax.com/Sample_scripts.relax_disp.return_offset_data

Removed import of: from specific_analyses.relax_disp.disp_data import return_param_key_from_data in unit test.

Regarding sr #3124, (https://gna.org/support/index.php?3124) - Grace graphs production for R1rho analysis with R2_eff as function of Omega_eff.

This import is not needed.

Added the OMP relaxation rates and compressed PDB file to the repository.

This is to allow users to have a full data set to perform a test model-free analysis with.

The RAM in the relax information printout is now displayed for Mac OS X.

The 'sysctl' command is now being used to retrieve the RAM size and total memory, and the swap is
calculated as the difference.

Fix for bug #21763 (https://gna.org/bugs/?21763).

This is the problem of the chi2 value not being visible in the parameter list of the grace.write and
value.write user functions in the GUI.

The problem was that when asking for the parameter name list, the minimisation parameters were not
being asked for.

Fix for the relax information printout on Mac OS X.

Removed the dependence on subprocess.check_output() as this is only for Python 2.7 and higher.

This is for the relax information printout about the CPU info recently introduced.

The relax information printout, from "relax -i" for example, now includes detailed CPU information.

This uses operating system specific commands to obtain this information which is not available from
the platform Python module.