relax SVN archive

Added a check to open_read_file() to make sure a file name has been supplied.

Bug fix for the relax_io.get_file_path() function.

The file path of None can now be handled.

Modified the generic_fns.results.read() function.

A number of args have been axed and the format of the results file is now automatically determined.

Added the creation time to the results file.

Added 'container' to the description of the molecule, residue, and spin XML elements.

Rewrote the set_selected_sim() method as the changes of r6475 were rubbish.

Updated the set_selected_sim() to the new relax design.

Bug fixes for the __read_1_2_results() method.

The Monte Carlo simulation data structures are now properly set up.

Added a print out for the loading of simulations.

Limited the print out from __set_diff_tensor() to simply 'value' records.