Add support for logging to the system log if the shell variable syslog is set.
Add support for logging to the system log if the shell variable
syslog is set.

Add a warn() function to log a warning message.

Add a get_script_name() to determine the name of the script
currently running.  At the moment this just returns the base name
of $0, which should work provided the user uses POSIX style
functions and not KornShell style functions, i.e.:
    foo()
and not:
    function foo



mikelward/scripts,mikelward/scripts,mikelward/scripts