test-serve: disable unfixable tests on Windows These tests would run if hghave.has_serve() were enabled on Windows. Windows has no issue allowing an unpriviledged process to open port 13, so it doesn't abort. The other tests are related to how MSYS tries to be helpful and converts Unix constructs to the Windows equivalent. There isn't any way to disable this behavior, though it supposedly doesn't happen if the exe is linked against the MSYS library.