[gnome-boxes] Non-fast-forward update to branch wip/ricotz/vala

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/ricotz/vala' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  2b6e735... Use GLib.List.deep_copy() to fix invalid assignment in Arch

Commits added to the branch:

  3864858... archive-reader/writer: Use GLib.List.deep_copy() to fix inv