relax SVN archive

Changed the scope of the model-free variables.

These were shifted from the relax_gui module namespace into the model-free class namespace. These
will eventually be shifted into the relax data store if any of these are not hardcoded.

Shifted panel_4 into the model-free class.

This seems to be the model-free panel!

Re-added the import of gui_bieri.paths.IMAGE_PATH.

Fixed the gui_bieri module imports.

Removed all the unused imports.

The main GUI class instance is now passed into the Auto_model_free class.

This will create a nested object tree structure so that all parts of the GUI can access all other
parts.

The self.modelfree GUI panel is now passed into Auto_model_free.

Started to spin off the automatic model-free protocol GUI code into its own module.

Converted the module comment into a module docstring.

Bug fix for the thread execution.

'self' was being passed in as the last argument, but this is not how execution should occur. Either
the data is directly passed in as args to start_model_free or this function is merged back into a
module for the automatic model-free protocol GUI elements.