import MGW NAT application code into new repository.

All of the code originates from the old omso-er-sccp.git repo.
diff --git a/src/mgw_nat_sup.erl b/src/mgw_nat_sup.erl
new file mode 100644
index 0000000..2dfe245
--- /dev/null
+++ b/src/mgw_nat_sup.erl
@@ -0,0 +1,40 @@
+% OTP Supervisor for MGW NAT
+
+% (C) 2011 by Harald Welte <laforge@gnumonks.org>
+% (C) 2011 OnWaves
+%
+% All Rights Reserved
+%
+% This program is free software; you can redistribute it and/or modify
+% it under the terms of the GNU Affero General Public License as
+% published by the Free Software Foundation; either version 3 of the
+% License, or (at your option) any later version.
+%
+% This program is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+% GNU General Public License for more details.
+%
+% You should have received a copy of the GNU Affero General Public License
+% along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+-module(mgw_nat_sup).
+-behavior(supervisor).
+
+-export([start_link/0]).
+-export([init/1]).
+
+start_link() ->
+	supervisor:start_link({local, ?MODULE}, ?MODULE, []).
+
+init(_Arg) ->
+	{ok, MscLocalIp} = application:get_env(msc_local_ip),
+	{ok, MscLocalPort} = application:get_env(msc_local_port),
+	{ok, MscRemoteIp} = application:get_env(msc_remote_ip),
+	{ok, StpRemoteIp} = application:get_env(stp_remote_ip),
+	{ok, StpRemotePort} = application:get_env(stp_remote_port),
+	SctpHdlrArgs =	[MscLocalIp, MscLocalPort, MscRemoteIp,
+			 StpRemoteIp, StpRemotePort],
+	MgwChild = {mgw_nat_usr, {mgw_nat_usr, start_link, [SctpHdlrArgs]},
+		    permanent, 2000, worker, [mgw_nat_usr, sctp_handler, mgw_nat]},
+	{ok,{{one_for_all,1,1}, [MgwChild]}}.