relax SVN archive

svn+ssh://bugman@.../svn/relax/trunk

........
r18605 | bugman | 2013-03-04 14:02:21 +0100 (Mon, 04 Mar 2013) | 5 lines

The n_state_model.number_of_states user function no longer requires the N-state model to be defined.

This was only needed to update the model information, and is skipped if not set.
........
r18606 | bugman | 2013-03-04 14:16:39 +0100 (Mon, 04 Mar 2013) | 3 lines

The generic_fns.structure.superimpose.find_centroid() function now prints out Euler angles as well.
........
r18607 | bugman | 2013-03-04 14:23:47 +0100 (Mon, 04 Mar 2013) | 8 lines

Large improvements to the checking for all the rdc and pcs user functions.

The new methods check_pipe_setup() have been added to replace all other checking. This
standardises all error checking and provides much better coverage. The results is that a user will
be much less likely to encounter a Python traceback when they forget something, and will be told via
a RelaxError what they are missing.
........