relax SVN archive

Fixed all the spin user function unit tests.

All the unit tests in the spin base class are calling functions from within the object
self.spin_fns. In the spin user function unit test module, this has been set to the
prompt.spin.Spin instantiated class.

Fixed the relax data store import problem/clash in the spin_base_class module.

The singleton is now imported into the data.__init__ module as Data, and hence it can be
subsequently imported by the base class. A bit of a kludge, but it works for now!

Updated the spin user function unit tests to inherit Spin_base_class.

Updated the __init__.py module with the test_spin module name.

Preparation of the prompt.spin and generic_fns.spin base class.

Copied test_suite/unit_tests/generic_fns/test_spin.py to create a base class for the prompt as well.

Fixed the printout of the spin.create() user function.

Fixed the printout of the spin.renumber() user function.

Fixed the printout of the spin.rename() user function.

Bug fix for the spin.rename() user function.

The generic_fns.spin.create() function was being called instead and the non-existent spin_num
argument was being passed into it.