Log an event to the windows/unix system log

Description: Logs important events to the operating system log file. Use the following identifiers for log levels:

EMERGENCY - System is unusable
ALERT - Action must be taken immediately
CRITICAL - Critical conditions
ERROR - Error conditions
WARNING - Warning conditions
NOTICE - Normal, but significant, condition
INFO - Informational message
DEBUG - Debugging information

In Unix/Linux, this function is analagous to the syslog command, and logs to the 'messages' file

Sample Source SystemLog "My Message" As "Warning" SystemLog "My Message" As "Info"

Minimum version: 1.0