Fix shutdown action name.

(Inconsistent with the DDL)
Merge branch 'refactor'
Relax message checks.

This allows spaces in shutdown messages.
Merge branch 'message'
Ooops, a validation is required.
Merge branch 'message'
Fix: shutdown: -H and -P flags can only be used along with -h flag.
Merge branch 'shutdown-flags'
Merge pull request #5 from sante-link/master

Pull in required DDL update and fix shutdown flag for Debian