relax SVN archive

Added backwards compatibility for the old relaxation data structures in the spin container.

The methods _back_compat_hook() and _back_compat_hook_ri_data() have been added to allow the base
data structures of the spin container to be updated to the new structures. The version information
is now being passed from the data pipe from_xml() method.

Added backwards compatibility for the old relaxation data structures in the data pipe.

The methods _back_compat_hook() and _back_compat_hook_ri_data() have been added to allow the base
data structures of the relax data pipe to be updated to the new structures. The version
information is now being passed from the relax data store from_xml() method.

Syntax fix for the create_mfdata() function.

Updated the Modelfree4 generic_fns.palmer module for the new relax data ID string design.

Updated the test_aic_mod_sel_diff_tensor() system test for the new relax data ID string design.

Deleted the now useless get_peak_intensity_type(), get_temp_calibration(), and get_temp_control().

Updated the relaxation data bmrb_write() method for the new relax data ID string design.

Simple fixes for some of the methods.

Updated temp_control_setup() for the new relax data ID string design.

Updated temp_calibration_setup() for the new relax data ID string design.