relax SVN archive

Large rewrite of the value setting functions.

The references to 'data_type' have been changed to 'param'.

The docstrings for 'set' and 'return_data_name' have been reversed in all user function docstrings.

The user function 'diffusion_tensor.set' has been renamed to 'diffusion_tensor.init'.

The generic function 'diffusion_tensor.set' has been forked into the parameter setting function
'diffusion_tensor.set' and tensor initialisation function 'diffusion_tensor.init'.

A bug has been removed from the 'diffusion_tensor.map_bounds' generic function involving the
returning of parameter specific data.

The functions in the generic 'diffusion_tensor' class have been alphabetically reordered.

The generic function 'value.set' has been extensively rewritten to handle diffusion tensor
parameters.

A new generic function 'value.sort_params' has been added to specifically handle the flexibility of
the user function 'value.set'.

A few bugs in 'specific_fns/jw_mapping.py' and 'specific_fns/model_free.py' have been removed.
These involve the returning of parameter specific data.

The 'RelaxUnknownParamError' error has been expanded.

Even more debugging of the OpenDX mapping function.

More debugging of the OpenDX mapping function.

Lots of bugs removed from the new OpenDX mapping function.

Almost a complete rewrite of the OpenDX mapping function.

Started to rewrite the OpenDX mapping function to be more flexible.

Added the map_bounds and map_labels functions for the diffusion tensor and modified the model-free
map_bounds function.

Many copyright notices were updated and the start of the advanced mapping function.

To implement the advanced space mapping function, the function 'return_data_name' was added to the
diffusion tensor generic file.

Modified the threading docstring to describe changes need in the /etc/ssh/sshd_config file.

Slight formatting change.