[Libguestfs] [PATCH nbdkit 0/9] Port to Windows.

Also available here: https://github.com/rwmjones/nbdkit/tree/2020-windows-mingw This is the port to Windows using native Windows APIs (not MSYS or Cygwin). This patch series is at the point where it basically now works. I can run the server with the memory plugin, and access it remotely using guestfish, creating filesystems and so on without any apparent problems. Nevertheless there are many missing features (see TODO). It would be really nice to have a native Windows file plugin. It's hard to imagine an NBD server being taken seriously that cannot serve files! The major impediment to getting this upstream is probably the requirement for libnbdkit.so (first patch). Although this is optional and doesn't break backwards compatibility it's a rather large change especially as I hope we're coming towards the end of the 1.22 development cycle. So this is more like 1.24 material. It would also be nice if we were automatically doing CI on this code so it doesn't regress. While investigating this topic I saw that gnutls is using gitlab CI to cross-compile and test with mingw-w64: https://gitlab.com/gnutls/gnutls/-/blob/master/.gitlab-ci.yml Rich.