relax SVN archive

The GUI auto-generated user function SetValue() method now skips function and fn arg arguments.

These are not supported in the GUI!

Fixes for the grace.write user function definitions for the GUI.

The x_data_type and y_data_type can be set by the user to, for example, 'spin'. Therefore they
cannot be readonly.

Fix for the model-free GUI auto-analysis test under certain conditions.

The spin viewer window was loading the spins asynchronously, but the subsequent relaxation data
loading was synchronous. If a previous GUI test failed this would often trigger a racing condition!

Loosened the checking conditions for the test_set_value() J(w) mapping system (and GUI) test.

Just like the consistenecy testing, the GUI string conversions to and from floats introduces a
slight truncation.

The consistency testing test_set_value() system (and GUI) test has been made less strict.

The conversion of the bond length and CSA values to GUI strings and back to floats causes a slight
numerical truncation.

Fix for one of the consistency testing system test scripts.

The J(w) mapping user function was being called instead!

Fix for the recently changed consistency testing test suite script.

Missing imports!

The specific analysis API base return_data_desc() now has a basic implementation.

This will search through the global and then spin parameters objects, returning what ever is found.

The specific analysis API base method calls to RelaxImplementError now send in the function name.

This allows for better identification of what needs to be implemented.