[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:

  193f347... registrybackend: get whether a backend is writable or not
  bfe613e... registrybackend: handle writability notifications

Commits added to the branch:

  74442a0... registrybackend: do not leak self if there are no items (*)
  9840788... registrybackend: get whether a backend is writable or not
  e0621e1... registrybackend: handle writability notifications

(*) This commit already existed in another branch; no separate mail sent