relax SVN archive

Bug fix for the freezing of the GUI.

The spectrum list GUI element was trying to update itself during execution lock, causing races if
the spectrum data structures in the relax data store are being modified as the GUI element update
is occurring. This would result in a hard lock of the GUI!

Clean up of the debugging printouts from the status module.

The relax execution lock now has debugging print outs.

The status container instance is now private in the Relax_lock objects.

The fake_lock variable in the status module classes is now private.

Added some debugging print outs for the GUI interpreter object.

The default max_iter value is no longer a string. This fixes the model-free auto-analysis GUI tab.

Fix for the model-free auto-analysis GUI tab - the max iteration default should be an integer.

Fix for the validate_sequence() function - the eval() calls raise all sorts of errors.

Fix for the reading of the sequence from generic formatted files with None in some of the columns.

This second problem is for the non-integer columns as the text 'None' was being interpreted as the
name.