Support for shutdown/standby/hibernate

git-svn-id: svn://svn.appwork.org/utils@2153 21714237-3853-44ef-a1f0-ef8f03a7d1fe
git-svn-id: svn://svn.appwork.org/utils@2154 21714237-3853-44ef-a1f0-ef8f03a7d1fe