relax SVN archive

Shifted the core of the model_loop() dispersion method into its own function.

The new function specific_analyses.relax_disp.disp_data.loop_cluster() can now be used by other
parts of relax. The model_loop() method now yields the data that loop_cluster() yields.

Added a wizard graphic for the relax_disp.sherekhan_input user function.

Created the relax_disp.sherekhan_input user function.

This includes an icon for the GUI, and the full front and backends.

Created a directory and script in preparation for the relax_disp.sherekhan_input user function.

Changes to the dispersion auto-analysis write_results() method.

This is to output more of the dispersion parameters to text files and 2D grace plots.

Added the residue :71 results to the lm63_comparison file.

This is a summary of the optimisation results using the high-precision R2eff error results for the
different dispersion softwares.

Added a directory of relax results for the truncated high-precision Hansen CPMG R2eff values.

This uses the base_pipe.bz2 and r2eff_pipe.bz2 files with the high-precision R2eff errors, and hence
can be compared to the NESSY and CPMGFit results.

Fix for the phi_ex dispersion parameter scaling - the scaling was in the wrong direction.

Added parameter checks to the Relax_disp.test_hansen_cpmg_data_LM63 system test.

Speed up of the system tests using Flemming Hansen's CPMG data.

The grid search increments, function tolerance and maximum number of iterations have all been made
looser.