relax SVN archive

Modified the generate_data.py diffusion tensor to relaxation data creation script.

The NH vectors are no longer truncated to match the PDB.

Python 3 fix for the lib.sequence_alignment.align_protein module.

The string.upper() function no longer exists.

Python 3 fix for the lib.sequence module.

The string.upper() function no longer exists.

Updated the Structure.test_align_molecules system test for the changed PDB structures.

The test_suite/shared_data/diffusion_tensor/spheroid/uniform.pdb file now has more residues, and the
atomic positions are different.

Updated the Structure.test_align system testt for the changed PDB structures.

The test_suite/shared_data/diffusion_tensor/spheroid/uniform.pdb file now has more residues, and the
atomic positions are different.

Updated the Structure.test_delete_atom system test for the changed PDB structures.

The test_suite/shared_data/diffusion_tensor/spheroid/uniform.pdb file now has more residues, and the
atomic positions are different.

Updates for the Structure.test_create_diff_tensor_pdb_ellipsoid system test.

The PDB checking has been updated for the new data.

Updates for the Structure.test_create_diff_tensor_pdb_oblate system test.

The test now uses the spheroid synthetic relaxation data rather than the ellipsoid data, and the PDB
checking has been updated for the new data. The oblate tensor is now forced in the system test
script.

Updates for the Structure.test_create_diff_tensor_pdb_prolate system test.

The test now uses the spheroid synthetic relaxation data rather than the ellipsoid data, and the PDB
checking has been updated for the new data.

Updates for the Structure.test_create_diff_tensor_pdb_sphere system test.

The test now uses the sphere synthetic relaxation data rather than the ellipsoid data, and the PDB
checking has been updated for the new data.