Removed unused variable, suppressing warning.
sync CHANGES
bump version
Several improvements and interface changes in Manager.
Removing a warning for unused variable.
Updated CHANGES.
[doc] Change the display order for modules in the index page, add a title for each documented module.
[doc] Added doc to module Channel (direct backend).
sync CHANGES for 0.9.3
bump to 0.9.3
mirage-net now depends on ocaml-ipaddr, removal of duplicated code and adaptation.
Ported the direct backend to using the Ipaddr.V4.* functions, removing ipv4_* functions from Nettypes.
Ported the socket backend to using Ipaddr.V4.* functions as well.
Ipaddr.V4.blank -> Ipaddr.V4.any.
Updated META.in to include ipaddr.
Make dynamic linking optional when configuring.
bump to 0.9.4
Use the `Ipaddr` external library and remove the homebrew equivalent.

This syncs direct with socket.
socket: add Net.Manager.get_intfs

This is exposed by the direct backend and used by mirage-skeleton/tcp

Related to mirage/mirage-skeleton#9
socket: Net.Manager.id should be the same as OS.Netif.id

For compatability with the direct backend.

Related to mirage/mirage-skeleton#9