[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:

  df606ff... registrybackend: get whether a backend is writable or not
  474e9a8... registrybackend: handle writability notifications
  c5e7ae9... registrybackend: handle readability of the keys

Commits added to the branch:

  f18686f... registrybackend: handle readability of the keys
  7aa7609... registrybackend: get whether a backend is writable or not
  14eebaa... registrybackend: handle writability notifications