Added submodule contents into tree

externals/mbedtls/scripts/config.pl

@@ -0,0 +1,14 @@
+#!/usr/bin/env perl
+# Backward compatibility redirection
+
+## Copyright The Mbed TLS Contributors
+## SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+##
+
+my $py = $0;
+$py =~ s/\.pl$/.py/ or die "Unable to determine the name of the Python script";
+exec 'python3', $py, @ARGV;
+print STDERR "$0: python3: $!. Trying python instead.\n";
+exec 'python', $py, @ARGV;
+print STDERR "$0: python: $!\n";
+exit 127;