relax SVN archive

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().

Big refactorisation of the value setting code. Expect breakages as the changes aren't complete!

The parameter setting set() base class method has been shifted from the specific code to
the generic_fns.value module (and has been converted to a function). This method simply sets spin
specific functions and hence has been renamed to the set_spin_params() function.

Converted the maths_fns.jw_mapping module from Numeric to numpy.

Removed the num_instances() method from the specific_fns code as it is now part of the base class.

This method was moved to the base class in r4804 and the change was explained in a post by Edward
d'Auvergne at:
https://mail.gna.org/public/relax-devel/2008-01/msg00063.html (Message-id:
<7f080ed10801170126p7d8f5109ib838a894f4f979a8@...>)

More fixes for the unit tests of the generic_fns.value.partition_params() function.

The current data pipe needed to be changed back to a model-free pipe.