This reverts commit 0b92831b.

Update signaler make_fdpair to set file descriptors to -1 when too many ...

Update signaler make_fdpair to set file descriptors to -1 when too many files are open using socketpair.

Fix socket creation above sistem limits for all 'other' OS not covered b...

Fix socket creation above sistem limits for all 'other' OS not covered by eventfd, windows or vms; enhanced test to create sockets up to a bigger limit to really test hitting the OS limit

Added ignore test case

Signal that the peer performed orderly shutdown

Make FD_SETSIZE = ZMQ_MAX_SOCKETS_DFLT + 1 so there is room for the reaper socket

Get maximum number of sockets it can handle from poller_t

Fixing broken build issue #583

Add test case for many sockets

Simplified error handling for make_fdpair on Windows

Fixing issue #583. Using low resolution timer for clock::now_ms

Fix for issue 574

Modified the zmq_setsockopt documentation to include the ZMQ_ROUTER_HAND...

Fix race condition on shutdown

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

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>