relax SVN archive

The parameter list objects in the specific analysis API are now singletons.

This has no immediate benefit as these classes are only instantiated once. But it will allow for
efficient reuse of these objects in the future and for expansions of the specific analysis API.

Standardised all of the parameter list objects for the specific analyses.

All of the specific_analyses packages now contain a parameter_object module which defines all of the
parameters. The ordering of these is now consistent between the analyses, the result of which will
be more consistent ordering of element in the relax XML state files.

The new Param_list.add_csa() base class method has been added to standardise the CSA parameter. And
the capabilities of the add_model_info() method has been expanded.

The frame order specific analysis API object is now truly a singleton.

This should help eliminate some bugs.

Fixes for the module/package docstring comments.

Created two new parameter list methods from the relaxation dispersion code.

The add_model_info() and add_peak_intensity() base class methods have been created from the
relaxation dispersion code. These are just aliases for setting up a number of parameters via add()
in a standard way.

Docstring improvements for the add_min_data() parameter list base class method.

Created a parameter list object for the relaxation dispersion analysis.

Instead of using the parameter list object from the base class, the dispersion analysis now defines
its own.

Updated the module docstring of specific_analyses.parameter_object to match its purpose.

Import fix for the previous change (r22662).

Renamed the specific_analyses.api_objects module to parameter_object to better reflect what it is.

This contains a single object for the parameter list object and therefore does not need to be
generalised for additional types of objects for the specific analysis API.