Print usage information when shutdown is used by non-root user. Patch from Mike Frysi...
-rw-r--r-- 17987 COPYING
-rw-r--r-- 1085 COPYRIGHT
-rw-r--r-- 48 Makefile
-rw-r--r-- 217 README
drwxr-xr-x - contrib
drwxr-xr-x - doc
drwxr-xr-x - man
drwxr-xr-x - obsolete
drwxr-xr-x - src