[glib] (5 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:

  ba8373f... registrybackend: handle readability of the keys
  12d9448... registrybackend: get whether a backend is writable or not
  900a3ab... registrybackend: handle writability notifications

Commits added to the branch:

  e318952... gio/gobject: Various introspection fixes (*)
  259a61e... registrybackend: pass the event to the cache update (*)
  822b735... registrybackend: handle readability of the keys
  63f2642... registrybackend: get whether a backend is writable or not
  f0dc75d... registrybackend: handle writability notifications

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