[Libguestfs] [PATCH nbdkit 00/10] Make --run imply -U -

Should have done this a long time ago. I feel it is about time we change the default of nbdkit --run to imply -U -, rather than opening a public port. Patch series turned out to be a little bit more complicated than I anticipated, but it contains some nice clean ups. Last patch updating the documentation wouldn't be applied any time soon, so that the old docs stay around on the website. Rich.