menuselect: Add menuselect to Asterisk trunk (Patch 1)

This is the first patch that adds menuselect to Asterisk trunk, and removes
the svn:externals property. This is being done for two reasons:
(1) The removal of external repositories eases a future migration to git
(2) Asterisk is now the only thing that uses menuselect; as a result, there's
    little need to keep it in an external repository

Subsequent patches will remove the mxml dependency from menuselect and tidy
up the build system.

ASTERISK-20703


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@418832 65c4cc65-6c06-0410-ace0-fbb531ad65f3

menuselect/menuselect_stub.c

@@ -0,0 +1,39 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2005 - 2006, Russell Bryant
+ *
+ * Russell Bryant <russell@digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*
+ * \file
+ *
+ * \author Russell Bryant <russell@digium.com>
+ * 
+ * \brief Menu stub
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "menuselect.h"
+
+int run_menu(void)
+{
+	fprintf(stderr, "**************************************************\n");
+	fprintf(stderr, "*** Install ncurses to use the menu interface! ***\n");
+	fprintf(stderr, "**************************************************\n");
+
+	return -1;
+}