[Libguestfs] [PATCH v3 00/23] Reimplement many daemon APIs in OCaml.

[Richard W.M. Jones]

I think this fixes everything mentioned:

- Added the Optgroups module as suggested.

- Remove command temporary files.

- Replace command ~flags with ?fold_stdout_on_stderr.

- Nest _with_mounted function.

- Rebase & retest.

Rich.