relax SVN archive

Removed some old model-free code which seems to be completely useless!

Fixed the args in the call to N_state_opt.__init__().

Updated the func() method to return the chi-squared value.

The back calculated reduced tensor elements is still missing.

Updated the N_state_opt.__init__() method to place its args into the class instance namespace.

Passed in the correct data structures into N_state_opt.

Removed some useless code.

The aligment tensor errors are now properly packed into a numpy array.

The errors are all 1 if there are no loaded errors (to convert the chi2 func to the SSE func).

Finished renaming the structure cdp.align_tensor to cdp.align_tensors.

Started to rename the structure cdp.align_tensor to cdp.align_tensors (as it contains many tensors).

Created a list of all the reduced alignment tensor elements (for the chi-squared function).