relax SVN archive

Added the missing self arg to a number of grid search methods.

Passed the lower, upper, and inc variables into grid_search_config().

A number of modifications to get the grid_search_config() method to work.

Bug fix, 'if scaling_matrix:' cannot be used on a numpy object.

The param_set variable is now passed into assemble_scaling_matrix().

Passed the number of params into the assemble_scaling_matrix() method.

Converted the num_params keyword arg in assemble_scaling_matrix() to a normal arg.

Updated the model-free assemble_scaling_matrix() method to the new relax design.

Changed all epydoc '@param' to '@keyword' for all keyword args in the mf_minimise module.

Updated the model-free assemble_param_vector() to accept spin containers.