First attempt at inproc connect before bind
Merge remote-tracking branch 'upstream/master' into inproc_connect_before_bind
Fix race condition and support multiple socket connects before bind.
Send identities when connecting pending sockets.
Merge branch 'master' of https://github.com/zeromq/libzmq into inproc_connect_before_bind
Fix whitespace
Merge pull request #656 from ricnewton/inproc_connect_before_bind

Allow inproc sockets to connect before bind