relax SVN archive

Important bug fix!!

The theta angle of the spheroidal diffusion tensor was being improperly wrapped between 0 and pi.
This was causing the glide reflection symmetry to be broken, hence the tensor was incorrect. The
result would be longer optimisation times for the spheroid tensors and more iterations than
necessary in the full_analysis.py script.

The spheroidal diffusion tensor from the mfout file is now read and loaded into the relax data store.

Fix for the spin names in the test_palmer_omp() system test checks.

Updated the checks of the test_palmer_omp() system test to be specific to that test.

The Modelfree4 system test using the OMP data now uses the truncated and more standard PDB file.

Created a truncated OMP PDB file with only NH vectors of the first 15 residues.

The molmol residue name syntax has also been fixed to allow Modelfree4 to be happy.

Fix for the test_palmer_omp() system test.

The PDB file has no models in it!

Bug fix for the create() method. Deselected spins should be skipped.

Created a system test for Modelfree4 with the OMP data.

This runs the palmer_omp.py system test script.

Removed the reading of the PDB file and setting of a spheroid tensor.

This will be tested in a second system test.