Rename MINIX service(8) to minix-service(8)

IMPORTANT: this change has a docs/UPDATING entry!

This rename is unfortunately necessary because NetBSD has decided to
create its own service(8) utility, and we will want to import theirs
as well.  The two can obviously not coexist.

Also move ours from /bin to /sbin, as it is a superuser-only utility.

Change-Id: Ic6e46ffb3a84b4747d2fdcb0d74e62dbea065039

etc/rc

@@ -46,7 +46,7 @@ up()
     service=$1
     shift
 
-    service $opt up /service/$service "$@"
+    minix-service $opt up /service/$service "$@"
 }
 
 edit()
@@ -72,7 +72,7 @@ edit()
     if [ ! -x $binlocation ]
     then	binlocation=/sbin/$service
     fi
-    service $opt edit $binlocation -label $service "$@"
+    minix-service $opt edit $binlocation -label $service "$@"
 }
 
 while getopts 'saf' opt
@@ -174,7 +174,7 @@ autoboot|start)
 	rootline=`cat /etc/mtab | grep "on / "`
 	rootfs=fs_`echo "$rootline" | cut -d' ' -f1 | cut -d'/' -f3`
 	roottype=`echo "$rootline" | cut -d' ' -f5`
-	service -c edit /service/$roottype -label $rootfs
+	minix-service -c edit /service/$roottype -label $rootfs
     fi
 
     if [ "$sflag" ]
@@ -224,11 +224,11 @@ down|stop)
 
     if [ -x /service/usbd ]
     then
-	service down usbd
+	minix-service down usbd
     fi
 
     # Tell RS server we're going down.
-    service shutdown
+    minix-service shutdown
     ;;
 esac