> changes from v3:
> * moved all of the digest code to the api (instead of INotify)
This change produce a quite ugly interface, because we now need
to return both 'data' and 'raw'. I really prefer the old code where
we compute the digest directly.
Also, we also need to compute the digest for /etc
this series aims to make /etc/hosts view/editable via the gui
the first 2 patches of pve-common are strictly not necessary for the series,
but improve the read_network_interfaces to also read UTF-8 comments correctly
(as in if you have utf8 characters in your /etc/network/interfaces comments,
they
