Check_MK Werk 5578: Fixed process locking (pid file handling)

ID: 5578 Title: Fixed process locking (pid file handling) Component: Event Console Level: 1 Class: Bug fix Version: 1.5.0i2 The PID file handling of the Event Console had the following issues: a) The locking was only done by the init script. Manual executions could lead to multiple running EC processes. This has been fixed by adding an additional file lock to the PID file. b) The PID file was only removed in case the EC stopped without exception. In case one happened, the PID file was left over refering to the old PID.