relax SVN archive

Parameter scaling is now functional in the target_function.relax_fit.c code.

Previously the scaling was not being used and the Python to C conversion was broken.

Removal of junk code in the _assemble_scaling_matrix() relaxation curve-fitting method.

The grid search bounds for the relaxation curve-fitting are no longer affected by scaling.

The parameter scaling activated a few commits ago revealed a bug in the lower and upper data
structures for the grid search in that these were continuously scaled down.

Fix for the relaxation curve-fitting _assemble_scaling_matrix() method.

The intensity scaling was never activated before due to a lower vs. uppercase parameter name
mismatch. This scaling is now correctly set up as the previous code assumed cdp.relax_times was a
list whereas it has been a dictionary since the early 1.3 releases.

The relaxation curve-fitting analysis parameters are now all lowercase.

This is to match the other analysis types so that the parameter names are identical to the
corresponding variable name. This is assumed by some of the specific analysis API methods.

The spin parameters are now set up last by the relax_disp.select_model user function back end.

Converted all relaxation dispersion parameters to lowercase.

This is so the variable names match the parameter names identically, avoiding problems with some of
the shared methods of the specific analysis API.

Expanded the checking in the Relax_disp.test_exp_fit system test.

The relaxation dispersion parameter errors from Monte Carlo simulations are now stored.

Previously MC simulations could run, but the errors were not being calculated and stored. The
sim_return_param() method was empty. This method is now complete.

In addition the set_error() method has been created for setting the parameter errors. And the
_exp_curve_key_from_index() and _param_index_to_param_info() auxiliary methods added to facilitate
data access.

The Relax_disp.test_exp_fit system test now checks some of the final results.