initial checkin of osmo-remsim

This adds some initial code, particularly the ASN.1 definition of the
RSPRO protocol, related makefile to build it using ffasn1c, and our
usual autoconf infrastructure to build it.

Change-Id: Ibaa993b59e9a65a0242b0f42b27d9cd29f8e1878
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..977785c
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,42 @@
+/*! \file main.c */
+/*
+ * (C) 2018 by Harald Welte <laforge@gnumonks.org>
+ *
+ * All Rights Reserved
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ *
+ * This program 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 2 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 General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <string.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include <talloc.h>
+#include <osmocom/core/linuxlist.h>
+#include <osmocom/sim/sim.h>
+
+#include <wintypes.h>
+#include <winscard.h>
+
+#include "internal.h"
+
+int main(int argc, char **argv)
+{
+	card_readers_probe(NULL);
+}