relax SVN archive

Updated the rotor2 CaM frame order test data optimisation script for the changed notation.

A new set of notations is now being used to try to solve a nasty alpha angle parameterisation bug.

Changed how the rotor axis is calculated in the func_rotor() frame order target function.

A new set of notations is now being used to try to solve a nasty alpha angle parameterisation bug.

Rewrite of the rotor2 CaM test data optimisation script.

This now handles the new rotor frame order model parameterisation. Two functions have been added
for converting between the old and new parameters - alpha_angle() to calculate the new alpha
parameter and shift_pivot() for shifting the pivot to the closest point to the CoM on the rotor
axis.

Fixed the rotor axis direction in the lib.frame_order.rotor_axis module.

The normalisation code has also been simplified.

Fix for the dispersion model_statistics() specific API method.

The spin ID argument should override the model_info argument. The method now correctly implements
this.

Removed an unused comment.

Docsting fixes for some model_statistics() API methods, including the base class method.

Removed the specific API method aliasing in the pipe_control.opendx module.

The API object is now instead aliased as self.api.

Speed-up, by removing repetitive calculations of g4**2.

sr #3154: (https://gna.org/support/?3154) Implementation of Baldwin (2014) B14 model - 2-site exact solution model for all time scales.

This follows the tutorial for adding relaxation dispersion models at:
http://wiki.nmr-relax.com/Tutorial_for_adding_relaxation_dispersion_models_to_relax#Debugging

Speed-up, by removing repetitive calculations of g3**2.

sr #3154: (https://gna.org/support/?3154) Implementation of Baldwin (2014) B14 model - 2-site exact solution model for all time scales.

This follows the tutorial for adding relaxation dispersion models at:
http://wiki.nmr-relax.com/Tutorial_for_adding_relaxation_dispersion_models_to_relax#Debugging