relax SVN archive

A large number of method and documentation variables to the specific analysis API.

These include:
default_value_doc
default_value()
grid_search()
minimise()
return_data_name_doc
return_data_name()
return_grace_string()
return_units()
set_doc
sim_pack_data()

Fix for the unit test for the N-state model _disassemble_param_vector() method.

Fix for the unit test for the N-state model _assemble_param_vector() method.

Added data_names() to the specific analysis API.

General docstring clean ups as well.

Added create_mc_data() to the specific analysis API.

Completed removal of back_calc() from the specific analysis API.

Removed back_calc() from the specific analysis API.

Removed assemble_scaling_matrix() from the specific analysis API.

Removed assemble_param_vector() and disassemble_param_vector() from the specific analysis API.

Added a prototype calculate() method to the API.