Re: [Libguestfs] [nbdkit PATCH 0/2] bind .zero to more languages

Begin the language binding followups to my new .zero callback, since Rich was indeed correct that we want them. I'm more familiar with python and perl (at least to the point that I was able to modify the appropriate example files and prove to myself that the bindings worked), so I've started with those. I'm less familiar with ruby and ocaml, so I've left those for tomorrow (it will rely heavily on copy-and-paste); it is also a chance to review if my decision of requiring a return value in order to trigger the graceful fallback is the best approach.