relax SVN archive

Missing import in the lib.frame_order.rotor module.

This was identified by the new Frame_order.test_auto_analysis system test.

Modified the optimisation of the rigid model in the frame order auto-analysis.

The grid search is now implemented as a zooming grid search.

Fixes for all of the Frame_order.test_rigid_data_to_*_model system tests.

The base script now sets all parameter values so that the minimise.calculate user function can
operate. The two free rotor model chi-squared values have been updated as these are sensitive to
the motional eigenframe parameter values - these models can never approximate a rigid state.

Better handling of unset parameters in the frame order optimisation functions.

The specific_analyses.frame_order.optimisation.target_fn_data_setup() and
specific_analyses.frame_order.parameters.assemble_param_vector() function both now accept the
unset_fail argument. This is set in both the calculate() and minimise() API methods. When set, a
RelaxError will be raised in the assemble_param_vector() function when a parameter has not been set
yet. This together with previous changes will prevent the frame order analysis from using 0.0 as a
starting value for unset parameters.

Renamed the other return grace data function, to a better shorter name.

sr #3124(https://gna.org/support/?3124): Grace graphs production for R1rho analysis with R2_eff as function of Omega_eff.
sr #3138(https://gna.org/support/?3138): Interpolating theta through spin-lock offset [Omega], rather than spin-lock field strength [w1].

Renamed return grace data function, to a better shorter name.

sr #3124(https://gna.org/support/?3124): Grace graphs production for R1rho analysis with R2_eff as function of Omega_eff.
sr #3138(https://gna.org/support/?3138): Interpolating theta through spin-lock offset [Omega], rather than spin-lock field strength [w1].

Made the plotting function uniform into accepting both CPMG and R1rho data.

Also made a function to return data, depending if it is data, back calculated, interpolated or residual.

sr #3124(https://gna.org/support/?3124): Grace graphs production for R1rho analysis with R2_eff as function of Omega_eff.
sr #3138(https://gna.org/support/?3138): Interpolating theta through spin-lock offset [Omega], rather than spin-lock field strength [w1].

Modified the specific_analyses.frame_order.parameters.assemble_param_vector() function.

This can now handle the case of no parameters being present. The corresponding elements of the
numpy array will consist of NaN values.

Modified the specific_analyses.frame_order.parameters.update_model() function.

This will no longer set all parameters to 0.0, excluding the pivot point.

The Frame_order.test_auto_analysis system test now writes all files to the directory of ds.tmpdir.

This is to prevent the system test from dumping files in the current directory.