relax SVN archive

Converted all instances of 'ri_label' to 'id'.

Converted the rdc.read() user function from the relax_data.read() code.

Removed some debugging code.

Fix for the return_data_name() method when no match occurs and the index flag is True.

Added a number of new parameters to the return_data_name() method.

This include the bond length, and heteronucleus and proton types.

Fix for the return_data_name() method when no match occurs and the index flag is True.

Switched from os.devnull to devnull from relax_io.open_write_file().

Removed a test for the model setup in the set_non_spin_params() method.

Changes some calls to R to calls to CoM.

A discussion on this topic is available at:
https://mail.gna.org/public/relax-devel/2008-07/msg00024.html (message ID:
48736C7F.5040304@...)

Created the framework for a user function class for handling RDCs (by copying the relax_data code).