RELICENSE: Google, Inc.

Relevant commits: ddb82a54, 68f5926e

Also adds AUTHORS entry that should have been part of the previous commits.

AUTHORS

@@ -8,6 +8,7 @@ Copyright (c) 2011 VMware, Inc.
 Copyright (c) 2012 Spotify AB
 Copyright (c) 2013 Ericsson AB
 Copyright (c) 2014 AppDynamics Inc.
+Copyright (c) 2015 Google, Inc.
 Copyright (c) 2015-2016 Brocade Communications Systems Inc.
 
 Individual Contributors

RELICENSE/google.md

+# Permission to Relicense under MPLv2
+
+This is a statement by Google, Inc.
+that grants permission to relicense its copyrights in the libzmq C++
+library (ZeroMQ) under the Mozilla Public License v2 (MPLv2).
+
+A portion of the commits made by the Github handle "tkoeppe", with
+commit author "Thomas Köppe", are copyright of Google, Inc.
+This document hereby grants the libzmq project team to relicense libzmq, 
+including all past, present and future contributions of the author listed above.
+
+Thomas Köppe
+2017/09/13