relax SVN archive

Import fix of the data_store package.

Renamed the data package to data_store.

This is part of the relax package layout redesign.

Shifted the float module into the lib package.

This is part of the relax package layout redesign.

Renamed the maths_fns package to target_functions.

This is part of the relax package layout redesign.

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.