relax SVN archive

Deleted the now unused _update_sim_set() method of the diffusion tensor data structure.

Removed the now unused _update_sim_append() method from the diffusion tensor data structure.

Cleaned up the docstring of the diffusion tensor data object __setattr__() method.

Updated all of the diffusion tensor unit tests to the new design.

Fix for the reading of model-free results files from relax 1.2 when simulation data is missing.

Fix for the reading of relax 1.2 model-free results files for the diffusion tensor structure redesign.

Another fix for the fold_angles() diffusion tensor function - again an incomplete design conversion.

Fix for the setting of the diffusion tensor parameter errors in the model-free specific analysis code.

Fix for the setup of the model-free Monte Carlo simulations for the new diffusion tensor design.

Another fix for the diffusion_tensor.init user function - it was not completely converted.