Add descriptions.

init.d/killprocs.in

@@ -2,6 +2,13 @@
 # Copyright 2007-2008 Roy Marples <roy@marples.name>
 # All rights reserved. Released under the 2-clause BSD license.
 
+description="Kill all processes so we can unmount disks cleanly."
+
+depend()
+{
+	keyword noprefix
+}
+
 start()
 {
 	ebegin "Terminating remaining processes"