Check_MK Werk 0964: Fix hanging shutdown of CMC on RedHat 5.X

ID: 0964 Title: Fix hanging shutdown of CMC on RedHat 5.X Component: Notifications Level: 2 Class: Bug Fix Version: 1.2.5i3 When using the CMC on RedHat/CentOS 5.X then the CMC would not correctly shutdown. The reason is, that the Python implementation of that OSes raises an Exception on sys.exit, while newer versions don't. This has been fixed by handling <tt>SystemExit</tt> explicitely.