relax SVN archive

Removed the test_grid_ops() method from the specific analysis API.

This has been shifted into the new lib.optimisation module and converted into a function, breaking
a number of circular import kludges.

Shifted some of the specific_analyses.model_free.parameters functions into the new 'model' module.

Shifted the last private method out of the model-free specific analysis API class.

It has been converted into a function of the new 'data' module, for lack of a better name.

Shifted the model-free classic_style_doc user function documentation to the 'uf' module.

Renamed specific_analyses.model_free.results to back_compat.

This is to make the purpose of the module clearer, to avoid developer confusion.

Converted all of the class methods in specific_analyses.model_free.results to functions.

This class has been removed from the API as well.

Updated the model-free specific analysis package __all__ list for the recent changes.

The read_columnar_results() method has been removed from the specific analysis API.

This is only for backwards compatibility with ancient relax 1.2 and earlier model-free results
files, so will never be used by any other analysis.

Clean up and refactoring of the specific_analyses.model_free.bmrb module.

The class methods have all been converted into functions, the deleted class is no longer a base
class for the specific analysis API class.

Removal of some unused imports from specific_analyses.model_free.api.