Adds the shutdown service.

--- init.d/Makefile.Linux.orig	2009-05-02 23:22:58.456719613 +0200
+++ init.d/Makefile.Linux	2009-05-02 23:23:11.172882585 +0200
@@ -2,7 +2,7 @@ NET_LO=	net.lo
 
 SRCS+=	devfs.in dmesg.in hwclock.in consolefont.in keymaps.in killprocs.in \
 	modules.in mount-ro.in mtab.in numlock.in procfs.in sysfs.in \
-	termencoding.in
+	termencoding.in shutdown.in
 
 .SUFFIXES:	.Linux.in
 .Linux.in:
--- runlevels/Makefile.Linux.orig	2009-05-02 23:27:32.089940526 +0200
+++ runlevels/Makefile.Linux	2009-05-02 23:27:42.565715104 +0200
@@ -1,3 +1,3 @@
 SYSINIT+=	devfs dmesg
 BOOT+=		hwclock keymaps modules mtab procfs termencoding
-SHUTDOWN+=	killprocs mount-ro
+SHUTDOWN+=	killprocs mount-ro shutdown