[glib] (3 commits) Non-fast-forward update to branch wip/nacho/registry-writable

[Ignacio Casal Quinteiro <icq src gnome org>]

The branch 'wip/nacho/registry-writable' 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:

  31cd43d... registrybackend: handle readability of the keys
  4c47ebc... registrybackend: get whether a backend is writable or not
  920d28b... registrybackend: handle writability notifications

Commits added to the branch:

  653084c... registrybackend: handle readability of the keys
  de86974... registrybackend: get whether a backend is writable or not
  054f441... registrybackend: handle writability notifications