Squashed 'ocamlczmq/' changes from d761e4e..6c20822

6c20822 Plain autoconf instead of autogen.sh
97b1fa2 Merge pull request #6 from chsticksel/master
d857382 Removed trace of libtool configure
6dcd383 Merge pull request #5 from chsticksel/master
c653efd Use libtool from ZeroMQ, removed unnecessary requirements from Makefiles

git-subtree-dir: ocamlczmq
git-subtree-split: 6c20822c3f589d533b9342009688379167a211c3
Merge commit 'a6a27f3bd8745afd323bb6722c609f47cd4a48dd'