Dag-Erling Smørgrav

This fixes various code quality issues I encountered while chasing a memory leak reported by test automation. I failed to reproduce the memory leak, but I hope you find this...

Update Windows build and add Windows to the CI lineup

1

This is a work in progress. Visual Studio reports a heap overflow in `retest`, so I'm not running tests in CI until I've found and fixed the cause.

Revert incomplete waf integration.

4

I'm not fundamentally opposed to the idea of replacing GNU autotools, but waf is not the right replacement. We should look into either CMake or Meson instead.

Improve reliability of NO_COLOR tests.

2

Use `env` to ensure that `NO_COLOR` is set to the desired value (or unset) regardless of any initialization that may occur when `script` forks a shell to run jq in.

* Create `src/config.h` instead of passing everything on the compiler command line. * To reduce the magnitude of this change, add `--include src/config.h` to CFLAGS instead of adding `#include "src/config.h"`...