Merge pull request #2442 from bprager/master

license grant

RELICENSE/BerndPrager.md

+# Permission to Relicense under MPLv2
+
+This is a statement by Bernd Prager
+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 "bprager", with
+commit author "Bernd Prager <bernd@prager.ws>", are copyright of Bernd Prager.
+This document hereby grants the libzmq project team to relicense libzmq, 
+including all past, present and future contributions of the author listed above.
+
+Bernd Prager
+2017/03/22