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.

Add mailmap file

Add missing support for IPv6 link local addresses

Problem: zmq_vmci man page claims to be zmq_ipc man page

Don't build VMCI by default.

Solution: fix this.

Solution: disable vmci by default
Fixes issue #1655

Solution: do not include vmci header outside of vmci IFDEF
Fixes issue #1655

Add the VMCI transport.

VMCI transport allows fast communication between the Host
and a virtual machine, between virtual machines on the same host,
and within a virtual machine (like IPC).

It requires VMware to be installed on the host and Guest Additions
to be installed on a guest.

Adjust start of heartbeat timer