relax SVN archive

Fix for bug #21615, the missing data dialog failure when executing the GUI model-free analysis.

This is the bug at https://gna.org/bugs/?21615 as reported by Ivan Leung (ivanhoe dott leung att
chem dott ox dot ac dot uk).

The problem is that the spin container's "isotope" variable is being accessed directly after a test
showing that this variable does not exist. This is now fixed so that the missing data dialog is now
presented explaining that the spin isotope information is not set.

Created the Mf.test_bug_21615_incomplete_setup_failure GUI tests.

This is designed to catch bug #21615 (https://gna.org/bugs/?21615) as reported by Ivan Leung
(ivanhoe dott leung att chem dott ox dot ac dot uk).

Included are the data files Ivan attached to the bug report truncated to two residues. The GUI test
follows exactly the steps outlined by Ivan.

Epydoc docstring fix for the pipe_control.structure.main.load_spins() function.

Changed the module ordering in the python_seek.py development script.

Output formatting improvements for the python_seek.py development script.

The python_seek.py script now accepts the 'all' argument to display all modules supported by the script.

The python_seek.py now lists the Python version again (broken in the last few commits).

The python_seek.py script can now check for the ancient Scientific module.

The python_seek.py script can now check for the ancient Numeric module.

Added a copyright notice to the python_seek.py script.

The descriptive text has also been converted into a docstring. The copyright is simply to show who
wrote the script and how old it is.