RELICENSE: Naos Ltd MPLv2 grant

RELICENSE/naos_ltd.md

+## Naos Ltd (a New Zealand company)
+
+This is a statement by Naos Ltd (Naos) that grants permission to
+relicense its copyrights in the libzmq C++ library (ZeroMQ) under
+the Mozilla Public License v2 (MPLv2).
+
+The port of libzmq to run on the z/OS Mainframe ([GitHub Pull
+request #1136](https://github.com/zeromq/libzmq/pull/1136), [GitHub Pull
+request #1138](https://github.com/zeromq/libzmq/pull/1138), and
+[GitHub Pull request #1139](https://github.com/zeromq/libzmq/pull/1139))
+was performed as work for hire under contract to iMatix Corporation
+sprl, itself under contract to a client.  Thus copyright in that
+portability work does not belong to Naos Ltd, and Naos Ltd hereby
+releases any claim to the copyright in the z/OS Mainframe portability
+work identified by the above three GitHub pull requests.
+
+Ewen McNeill  
+Managing Director, Naos Ltd  
+2016-04-25