Fixed some CUG typos.
Made unregister remove passphrase and suite.rc.processed.
Merge pull request #847 from hjoliver/fixed-some-cug-typos

Fixed some CUG typos.
Space after list-comma.
Extend registration test.
Merge pull request #849 from hjoliver/unreg-remove-passphrase

Made unregister remove passphrase and suite.rc.processed.