relax SVN archive

Updated the value.set() user function to the new relax design.

Wrote a unit test for testing the failure of copying alignment tensor data.

Updates to of the alignment tensor unit tests to make them all now work.

Improved the error message for the tensor from and to args.

Updated the generic_fns.align_tensor.copy() function to use the 'tensor' key.

Updated the unit tests of generic_fns.align_tensor.copy() to use the tensor_from and tensor_to args.

A number of alignment tensor unit test fixes.

Updated the generic_fns.align_tensor.delete() function to use the 'tensor' key.

Fixed the unit tests of the alignment tensor to treat align_tensor as a dictionary.

Updated all the calls to generic_fns.align_tensor.align_data_exists() to pass in the tensor name.