relax SVN archive

Copyright updates which should have gone into r19024.

Renamed the specific_fns package to specific_analyses.

This is part of the relax package layout redesign.

Shifted the maths_fns.rdc and maths_fns.pcs modules to lib.nmr.

This is part of the relax library redesign.

Shifted the maths_fns.alignment_tensor module to lib.nmr.alignment_tensor.

This is part of the relax library redesign.

Set up the unit testing infrastructure for the lib.nmr package.

Updated the lib package __all__ list.

Created the empty lib.nmr package of the relax library.

Renamed the maths_fns.rotation_matrix module to lib.geometry.rotations.

This is part of the relax library redesign.

Shifted the physical_constants module into the lib package.

This is part of the relax library redesign.

Renamed the ansi module to lib.ansi.

This is part of the relax library redesign.