relax SVN archive

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.

Shifted all of the model-free specific analysis API methods into specific_analyses.model_free.api.

Created the new specific_analyses.model_free.optimisation module.

This consists of the merger of the 'mf_minimise' and 'multi_processor_commands' modules. All the
private class methods have been converted into functions.

Created the new specific_analyses.model_free.parameters module.

This consists of the private methods from the 'main' and 'mf_minimise'. All class methods have been
converted into functions.

Created the new specific_analyses.model_free.uf module.

This consists of the private methods from the 'main' module which act as the back end for the user
functions as well as the user function documentation.

Fixes for the new specific_analyses.model_free.api module.

Shifted the model-free analysis specific API object to the specific_analyses.model_free.api module.