The AppVeyor build test options mismatch between command line options
and CMake CURVE security options. Rename the command line options to
the correct names.
Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>

RELICENSE: mauri-melato grant

Update the mauri-melato libzmq fork

Relicense

RELICENSE: Jake Cobb grant

RELICENSE : Bruno Bodin grant

Unnecessary dynamic memory allocation in zmq_poller_poll()

Unnecessary dynamic memory allocation for zmq::socket_poller_t in zmq_poller_poll(). Fixed by allocating zmq::socket_poller_t from stack.

* Prevent DOS by asserts in TCP tuning

-Propagates socket option errors from the
tuning functions to the callers.
-Asserts a subset of error conditions during tuning,
excluding external network causes.
-Checks tuning results in 3 call sites and treats
them like failures to connect, accept, etc.

* Fix variable name

* Remove lambda requiring C++11

* add define for windows/UWP

* prevent issue with COM references

* gettickcount not available on uwp

* add compiler definitions

* add convenitnece cmake file

* brute force uwp compilation

* fix compiler version

* cosmetics

Relicense: Wouter Overmeire (lodagro)

RELICENSE: Juha Reunanen / Tomaattinen / Outotec grant

Problem: msg_t leaks/unhandled failures (and bad style).

License grant

Problem: lack of out-of-bound memory checks in tests

Solution: add a CI build run with GCC's Address Sanitizer enabled.
This compiler flag will make the unit test programs abort if it
detects errors such as out-of-bound memory access or use-after-free.

Problem: insufficient error handling relative to zap_connect.

Problem: assert used for ZAP error handling aborts process.

Problem: No relicense file for jemc contributions.