These sockets don't handle multipart data, so if callers send it,
they drop frames, and things break silently.

Solution: if the caller tries to use ZMQ_SNDMORE, return -1 and
set errno to EINVAL.

Problem: still one error in vcxproj files

Solution: fix and try again.

(We could start to think of using zproject to generate these build
scripts as the only difference is C/C++)

Problem: includes timer.cpp/hpp instead of timers.cpp/hpp

Solution: fix it.

Problem: performance tests don't link on Windows/MSVC

Solution: add Iphlpapi.lib to libraries to link against

Problem: MSVC projects don't include timers.cpp/hpp

Fixes for Windows, and poller API

Solution: add these

Solution: change zmq_poller_close(p) to zmq_poller_destroy(&p)

If we're going to add CLASS-like APIs we should use the proper
syntax; specifically 'destroy' instead of 'close', which is a
hangover from the 'ZeroMQ is like sockets' model we're slowly
moving away from.

Solution: change zmq_timers_close(p) to zmq_timers_destroy(&p)

Solution: add to project dependencies

Problem: build scripts don't need full git history

Problem: Windows build gives warning on v2_decoder.cpp:130

Solution: add explicit cast

Solution: add `--depth 1` parameter to `git clone` commands

CMAKE_VS_PLATFORM_TOOLSET may not be set.

E.g. for nmake.

Problem: no way to schedule timers with zmq_poll or zmq_poller 

Add missing header for the if_nametoindex on Windows.

Fix redirecting location of pdb via CMAKE_PDB_OUTPUT_DIRECTORY.

CI was broken by #54799c (reverted)

Fix alignment of initial chunk in yqueue

Clang's UndefinedBehaviorSanitizer catches this in the tests.

This reverts commit 54799c8c.

This change broke the tests/test_shutdown_stress testcase.

Build success message + Build zmq for android with a Dockerfile

Problem: travis CI tries to build "qt-android"

Solution: change .travis.yml to build "android" instead of "qt-android"

Problem: builds/qt-android name is inaccurate

Solution: rename to simple builds/android.

Add special interface to represent local VMCI context.