RELICENSE: Added templates for relicensing

RELICENSE/templates/relicense-template-mplv2-any-osi.txt

+# Permission to Relicense under MPLv2 or any other OSI approved license chosen by the current ZeroMQ BDFL
+
+This is a statement by {{ name of company / name of individual }}
+that grants permission to relicense its copyrights in the libzmq C++
+library (ZeroMQ) under the Mozilla Public License v2 (MPLv2) or any other 
+Open Source Initiative approved license chosen by the current ZeroMQ 
+BDFL (Benevolent Dictator for Life).
+
+A portion of the commits made by the Github handle "{{github username}}", with
+commit author "{{github commit author}}", are copyright of {{ name }} .
+This document hereby grants the libzmq project team to relicense libzmq, 
+including all past, present and future contributions of the author listed above.
+
+{{ Full Name }}  
+{{ creation date of document (format: yyyy/mm/dd) }}
\ No newline at end of file

RELICENSE/templates/relicense-template-mplv2-share-alike-osi.txt

+# Permission to Relicense under MPLv2 or any other share-alike OSI approved license chosen by the current ZeroMQ BDFL
+
+This is a statement by {{ name of company / name of individual }}
+that grants permission to relicense its copyrights in the libzmq C++
+library (ZeroMQ) under the Mozilla Public License v2 (MPLv2) or any other 
+share-alike Open Source Initiative approved license chosen by the current 
+ZeroMQ BDFL (Benevolent Dictator for Life).
+
+A portion of the commits made by the Github handle "{{github username}}", with
+commit author "{{github commit author}}", are copyright of {{ name }} .
+This document hereby grants the libzmq project team to relicense libzmq, 
+including all past, present and future contributions of the author listed above.
+
+{{ Full Name }}  
+{{ creation date of document (format: yyyy/mm/dd) }}
\ No newline at end of file

RELICENSE/templates/relicense-template-mplv2.txt

+# Permission to Relicense under MPLv2
+
+This is a statement by {{ name of company / name of individual }}
+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 "{{github username}}", with
+commit author "{{github commit author}}", are copyright of {{ name }} .
+This document hereby grants the libzmq project team to relicense libzmq, 
+including all past, present and future contributions of the author listed above.
+
+{{ Full Name }}  
+{{ creation date of document (format: yyyy/mm/dd) }}
\ No newline at end of file