relax SVN archive

Fix for the call to structure.read_pdb() in the lactose N-state model system test.

The molecule name must be explicitly set so that the same molecule in different models has the same
name.

Expanded the structural data validate() method to check molecule names.

Bug fix for __update_model(). cdp.structure.num_structures() no longer exists.

Fixes for the lactose N-state model system test.

The structures from different PDB files are now being sent to different models.

Updates for the renaming to bmrblib.

Renamed the bmrb package to bmrblib.

This is to avoid any future (and current) name clashes.

Import fix and copyright update.

Updated the module docstring and added an empty __all__ list.

Copyright update.

Converted generic_fns.bmrb into the bmrb package initialisation module.