dom0/init: Do not exclude NetVM at shutdown (#396)

In fact all VMs can be stopped at the same time, no need to keep order.
Also use qvm-shutdown to do it.

dom0/init.d/qubes_core

@@ -61,11 +61,7 @@ start()
 stop()
 {
     echo -n $"Shutting down all Qubes VMs:"
-    NETVM=$(qvm-get-default-netvm)
-    if [ "X"$NETVM = "X" ] ; then
-        NETVM="dom0"
-    fi
-    qvm-run -q --shutdown --all --wait --exclude $NETVM
+    qvm-shutdown -q --all --wait
     rm -f /var/lock/subsys/qubes_core
     killall meminfo-writer
     killall qmemman_daemon.py

dom0/init.d/qubes_netvm

@@ -58,10 +58,9 @@ stop()
         echo -n $"Doing nothing:"
 
     else
-
         echo -n $"Stopping NetVMs:"
         for VM in `get_running_netvms`; do
-            qvm-run -q --force --shutdown --wait $VM
+            qvm-shutdown -q --force --wait $VM
         done
 
     fi