zmq: add TIPC manpage

Signed-off-by: Erik Hugne <erik.hugne@ericsson.com>
Merge pull request #735 from Hugne/tipc_docs

zmq: add TIPC manpage
zmq: change TIPC default lookup domain when connecting

By default, TIPC uses a closest first approach to find
a publication that can satisfy your connection request.
Any publication on the local node will automatically
be chosen for all requests, even if you're trying to
spread it out over multiple machines.
We fix this by widening the default lookup scope.

Signed-off-by: Erik Hugne <erik.hugne@ericsson.com>
Merge pull request #736 from Hugne/lookup_domain

zmq: change TIPC default lookup domain when connecting
Removed over-long pauses in tests

- used msleep (10) in most places instead of zmq_sleep (1)
- may cause failures on slower machines
- to change, modify SETTLE_TIME in testutil.h
- tested down to 1 msec on fast boxes
Merge pull request #737 from hintjens/master

Removed over-long pauses in tests
Fix race condition on shutdown