Add test to check that every .c / .h file triggers a library rebuild

Build functional tests and test vectors on Windows continuous integration

Enable address and UB sanitizers

This enables address sanitizer and undefined behaviour sanitizer,
but disables leak detection sanitizer.
It seema there is an issue in qemu that we are using, which prevents
spawning leaksanitizer's tracer thread. But as leak detection is
already done by valgrind on x86 build, this functionality is not
absolute need at the moment.

Test for symbolic links

We disallow symbolic links to ensure implementations are standalone
and more portable.

Add dependency to header files in Makefile

Migrate test vector checks to pythonic testing framework

Allow to easily run individual test modules and add instructions to README

Run pythonified tests in the containerized alternative architecture tests

I should be less cocky about pushing these things to master and instead to a PR

common: use fixed size integers

Move metadata check to Python testing framework

arm: temporarily disable sanitizers

Implement symbol namespace check using new Python testing framework

adds tests on arm7 and arm8

Kybercasts