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/bootstrap.sh

@@ -0,0 +1,41 @@
+#!/bin/sh
+
+check_for_app() {
+	$1 --version 2>&1 >/dev/null
+	if [ $? != 0 ]
+	then
+		echo "Please install $1 and run bootstrap.sh again!"
+		exit 1
+	fi
+}
+
+uname -s | grep -q FreeBSD
+if [ $? = 0 ]
+then
+	check_for_app autoconf259
+	check_for_app autoheader259
+	check_for_app automake19
+	check_for_app aclocal19
+	echo "Generating the configure script ..."
+	aclocal19 2>/dev/null
+	autoconf259
+	autoheader259
+	automake19 --add-missing --copy 2>/dev/null
+else
+	AUTOCONF_VERSION=2.59
+	AUTOMAKE_VERSION=1.9
+	export AUTOCONF_VERSION
+	export AUTOMAKE_VERSION
+
+	check_for_app autoconf
+	check_for_app autoheader
+	check_for_app automake
+	check_for_app aclocal
+	echo "Generating the configure script ..."
+	aclocal 2>/dev/null
+	autoconf
+	autoheader
+	automake --add-missing --copy 2>/dev/null
+fi
+
+exit 0