relax SVN archive

Updated the relax version number to 4.0.0 on the http://www.nmr-relax.com/api/index.html webpage.

This includes changing the API documentation links and creating a new section for the new 4.0 major
version number.

Added the relax version 4.0.0 API documentation.

This is to the new API documentation directory http://www.nmr-relax.com/api/4.0/.

Updated the relax version number to 3.3.9 on the http://www.nmr-relax.com/api/index.html webpage.

Backported the relax 4.0.0 CHANGES file changes to trunk.

The command used was:
svn merge -r28018:28020 svn+ssh://bugman@.../svn/relax/tags/4.0.0 .

Completed the CHANGES file for relax 4.0.0.

The frame_order_cleanup branch commit log has now been processed, heavily edited, and converted into
release notes.

Partial update of the CHANGES file for relax 4.0.0.

This consists of only the recent changes in the trunk, all of the branch changes are yet to be
added.

Added the relax 4.0.0 manual to the repository.

Updated the version number to relax 4.0.0.

relax version 4.0.0.

This is a major feature release for a new analysis type labelled 'frame order'. The frame order
theory aims to unify all rotational molecular physics data sources via a single mechanical model.
It is a bridging physics theory for rigid body motions based on the statistical mechanical ordering
of reference frames. Its current implementation is for analysing RDC and PCS data from an internal
alignment to interpret domain or other rigid body motions within a molecule or molecular complex.

Changes to the introduction of the frame order theory chapter of the manual.