Squashed 'ocamlczmq/' changes from 8d88971..2ef98ae

2ef98ae Updated version numbers of ZeroMQ and CZMQ

git-subtree-dir: ocamlczmq
git-subtree-split: 2ef98ae7d393647584732277530b673baf7184f8
Updated ocamlzeromq
Reverted name to kind2