relax SVN archive

Updated the data_init() method for API consistency.

Updates to the methods of the reduced spectral density mapping API.

Changes to the args for the base API data_init() method.

A number of fixes for the model-free analysis specific API methods.

Alphabetical ordering of model-free methods, and separation of the private from the API methods.

Converted the private __compare_objects() method to the non-API _compare_objects() method.

Fix for the analysis specific base API sim_return_selected() method.

The model_info arg is now being used.

Fix for the specific analysis base API set_selected_sim() method.

Converted many of the model-free methods to use model_info rather than model_index.

Fixes for the model-free unit tests. The model_index arg is now called model_info.