Merge with https://gitlab.freedesktop.org/slirp/libslirp

[elmarco]

Hi

I understand the project started as a fork of qemu slirp code.

The qemu developers/maintainers have now decided to make slirp a standalone project, it is hosted on https://gitlab.freedesktop.org/slirp/libslirp.

It would be nice if we could merge back some of your changes there.

Thanks

[chewi]

Great timing! I found this project just the other day while trying to get SLIRP working in FS-UAE again. I have tried against QEMU 3.1.0 but haven't quite got it working. A standalone library definitely seemed like the way to go but I was disappointed that this one appeared to be unmaintained.