relax SVN archive

Complete fix for bug #12679 (https://gna.org/bugs/index.php?12679).

This bug was reported by Michael Funk (mifu att nmr dot mpibpc dot mpg dot de).

The last issue was that when there multiple graphs, one per spin, the spin labels for the graphs
were set to the x-axis values rather than the spin_id.

Partial fix for bug #12679 (https://gna.org/bugs/index.php?12679).

This bug was reported by Michael Funk (mifu att nmr dot mpibpc dot mpg dot de).

The problem was that the data for the graph was numpy arrays, and only lists were being checked for.

Bug fix for the temp dir removal in the relaxation curve-fitting system tests.

The loading of program state was resetting the relax data store, so now the name is also kept in
self.

Added a missing import causing a number of downstream system tests to fail.

Added code to check the Grace files created by the 1UBQ_relax_fit.py system test script.

Expanded the system test for both bug #12670 and bug #12679.

Fix for the 1UBQ_relax_fit.py system test script.

The directory arg to state.save() is 'dir_name'!

The ubiquitin relaxation curve-fitting system test now dumps all files to the temp dir.

A temporary directory is now created and deleted in the relaxation curve-fitting system tests.

Added some printouts for the loading of the generic intensity file.

This is as suggested in a post by Edward at:
https://mail.gna.org/public/relax-devel/2008-12/msg00016.html
(Message-id: <7f080ed10812040129pe2887deu339ae08b9021062a@...>)