Add relicense agreement from Spotify AB

[CMake] Add ENABLE_PRECOMPILED option

You might want to disable this flag when building with Ninja.

no void pointer to store function pointer

RELICENSE: add grant by Daniel Krikun

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Solution: fix syntax and formatting, remove C-ism for defining struct

Re-license Robert G. Jakabosky (Neopallium)

RELICENSE:  Add relicensing grant

RELICENSE: chymanfx

Adds relicensing grant

Adds relicensing grant

RELICENSE: John Murphy

Scripts for graphing benchmark results

Grant received by PR comment:
https://github.com/zeromq/libzmq/pull/3195#issuecomment-520338586

RELICENSE: Joel Lauener

* Add relicense grant
Signed-off-by: Dhammika Pathirana <dhammika@gmail.com>

Relicense permission

Add relicense statement

RELICENSE: Aleksander Melnikov

Add relicense agreement from Brian Adamson

Grant received via Github PR comment:

https://github.com/zeromq/libzmq/pull/1413#issuecomment-520233278

Fix formatting and add relicense for mesegura

Solution: run make clang-format-diff to fix it

relicense

Signed-off-by: Axel Nennker <axel.nennker@telekom.de>

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Relicense permission

RELICENSE permission

Added my relicense doc