relax SVN archive

Another fix for the stereochem_analysis system test, the results dir is now in ds.tmpdir.

Bug fix for the snapshot paths.

Enabled the relative stereochemistry analysis system test.

Fixes for the NOE restraint system tests as these involve the N-state model.

Fixes for all the N-state model system tests.

The scripts were moved to a sub-directory!

Added a system test script for testing the relative stereochemistry analysis.

Shifted all the N-state model scripts into their directory.

Created a directory for collecting all N-state model system test scripts together.

Added the phthalic acid RDC data aligned in a PAN gel.

Added a few Gromacs QM/MM snapshots.

This will be used for a stereochemistry analysis system test.