relax SVN archive

This is a minor feature and bugfix release. The structure.rmsd user function can now calculate
per-atom RMSDs, structure superimposition is now orders of magnitude faster, the relax deployment
scripts have been improved and expanded to cover other GNU/Linux systems, OpenMPI system testing
scripts have been added, and the relax information printout has been improved. Bugfixes include
that the structure.rmsd user function now correctly calculates the RMSD value, and the inversion
recovery relaxation curve-fitting equations are now correct.