Create /etc/init/softether.conf for upstart.

Create a softether.upstart file in the Debian overlay for systems that use
the upstart init subsystem.  This lets the operator control the SoftEther
daemon with commands like:

	# start softether
	# stop softether
	# status softether
	# restart softether

Also modify the softether.init file to exit early if the /etc/init/softether
file is installed.  Although the dh_installinit debhelper prefers an upstart
configuration for automatic control, it will also install the sysv script.

debian/softether.init

@@ -11,6 +11,12 @@
 
 set -e
 
+if test -f /etc/init/softether.conf
+then
+	echo "SoftEther is controlled by upstart." 1>&2
+	exit 0
+fi
+
 . /etc/default/softether
 
 case $SOFTETHER_MODE in

debian/softether.upstart

@@ -0,0 +1,25 @@
+description "SoftEther VPN"
+
+start on started networking
+stop on stoppping networking
+
+respawn
+expect stop
+
+script
+	test -f /etc/default/softether && . /etc/default/softether
+	case $SOFTETHER_MODE in
+	(vpnbridge)
+		exec /usr/sbin/vpnbridge upstart
+		;;
+	(vpnclient)
+		exec /usr/sbin/vpnclient upstart
+		;;
+	(vpnserver)
+		exec /usr/sbin/vpnserver upstart
+		;;
+	(*)
+		exit 0
+		;;
+	esac
+end script