relax SVN archive

More fixes for the arg unit tests of the eliminate() user function.

Fixes for the arg unit tests of the eliminate() user function.

Renamed an incorrectly named unit test module.

Wrote the arg unit test module for the eliminate() user function, with 2 unit tests.

Converted the eliminate() function to the new relax design.

Converted all 0 and 1 binary vals to the bools False and True.

Added a module docstring.

Converted the Eliminate.eliminate() method to a module function.

Bug fix for the spin_loop.

If the spin_loop was being executed an arbitrary data pipe (rather than the current), the call to
exists_mol_res_spin_data() was operating not on that pipe but on the current pipe!

Fixed the spin loop call in the copy() function.