relax SVN archive

Implemented the base class method set_non_spin_params().

This throws a RelaxError if anything is sent into the function.

Changed the call to diffusion_tensor.set() to the new specific function set_nonspin_params().

The code for setting parameters that are non-spin specific is very much dependent on the analysis
type, and hence this has been shifted into a call into specific_fns.

Converted the generic_fns.value code from Numeric to numpy.

Removed the cdp aliases as they are not used very often.

Converted another maths_fns module from Numeric to numpy.

Converted more maths_fns modules from Numeric to numpy.

Converted the data.diff_tensor code from Numeric to numpy.

Removed the Numeric and Scientific packages from the relax prompt namespace.

Shifted the RelaxParamSetError import to the generic_fns.value module.

Added a few more functions to be returned by get_specific_fn().

These include data_init(), default_value(), and set_update().