relax SVN archive

Converted the whole of the select() function to the new relax design.

Removed the word 'run' from the copy() docstring.

Fixed the module docstring.

Converted the bic() docstring to epydoc format.

Converted the aicc() docstring to epydoc format.

Converted the aic() docstring to epydoc format.

Alphabetical ordering of functions.

Converted all the model_selection methods into module functions.

Removed the check of the recently deleted modsel_run arg.

Converted the model_selection() user function to the new relax design.

The back end code still needs to be converted.