Solution: rework the bash test to avoid build failures as intended
and make it an easier one-liner

Solution: use packages on Ubuntu and brews on OSX. The packages and
the brews are always kept up to date, so it's no use to rebuild the
libsodium stable branch manually everytime.

Solution: if available, use eventfd with EFD_CLOEXEC flag to make
the process close the socket on fork+exec

Solution: if available, use epoll_create1 with EPOLL_CLOEXEC flag to
make the process close the socket on fork+exec

Solution: removed Pause

Signed-off-by: Bernd Langpap <Bernd.Langpap@airbus.com>

Solution: Set FD_SETSIZE to 16k for all other build definitions.

Solution: Provide poll() for Windows as well. This is a build option that
defaults to off as the resulting binary will only run on Windows Vista or
newer.

This is not tested with alternative Winsock service providers like VMCI,
but the documentation for WSAPoll does not mention limitations.

On my local machine, throughput improves by ~10 % (20 simultaneous
remote_thr workes to one local_thr, 10 byte messages), while latency
improves by ~30 % (measured with remote/local_lat).

Solution: switch to 4.9

Solution: update CI scripts to use newer r11c from r10e

Solution: use a variable for easier maintenance, in sync with zproject

Fix issue with unresolved external symbols for the gather and scatter classes by adding them to the MSVC 2010, 2012, 2013 and 2015 projects.

Solution: add make test to the cmake/ci_build.sh script

Solution: add macro in ZMQSourceRunChecks.cmake and optionally
include the TIPC sources if the support is available.
More importantly, only run the TIPC tests if the support is there.