changed: rename simulator main files

add _main to the file name. this in preparation for
removing ebos in the simulator instance file names

flow/flow_foam_main.cpp

@@ -0,0 +1,24 @@
+/*
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  OPM 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 General Public License
+  along with OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include "config.h"
+#include <flow/flow_ebos_foam.hpp>
+
+
+int main(int argc, char** argv)
+{
+    return Opm::flowEbosFoamMainStandalone(argc, argv);
+}