relax SVN archive

Fix for the new specific_analyses.n_state_model.data.opt_uses_j_couplings() function.

The cdp.rdc_data_types appears not to have all alignments IDs within it.

Added support for the T = J+D RDC data type to the N-state model target function.

The J couplings are sent into the target function class when the 'T' RDC data type is encountered.
These measured values are then added to the back-calculated RDC values to produced T(theta) which
is then compared to T via the chi-squared function.

Shifted another method from the N_state_model class to the specific_analyses.n_state_model.data module.

Split up the specific_analyses.n_state_model package into modules.

The new data and parameter modules have been created by shifting out method from the __init__ module
and converting them into functions of the two new modules. This is to simplify the package.

Fixed for the rdc.read, j_coupling.read and interatomic.read_dist user functions.

Comment lines are no longer removed, as it is impossible to tell a comment line from a spin ID
string.

The rdc.read user function can now handle T = J+D type data.

Support for this in the specific analyses is yet to be added.

Added a check for the RDC data type to the rdc.read user function.

Created an entire new user function class for handling J couplings in the relax data store.

This derives from the RDC user function modules. The following functions have been created:
j_coupling.copy, j_coupling.delete, j_coupling.display, j_coupling.read, and j_coupling.write.

Removed a false prompt example from the rdc.read user function docstring.

Removed some now irrelevant information from the rdc.read user function docstring.