relax SVN archive

Fixes for the relax_data.copy() back end.

Some changes to the consistency testing specific code for the new relax data ID string design.

Bug fixes for the new _back_compat_hook_ri_data() methods.

All objects starting with '_' are now considered special and skipped, instead of just starting with '__'.

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().