[metacity] Created tag 3.18.3

[Alberts Muktupāvels <muktupavels src gnome org>]

The unsigned tag '3.18.3' was created.

Tagger: Alberts Muktupāvels <alberts muktupavels gmail com>
Date: Wed Mar 30 01:14:18 2016 +0300

    Tag release 3.18.3

Changes since the last tag '3.18.2':

Alberts Muktupāvels (5):
      gradient: sync code with mutter before it was removed
      don't use libmetacity-private with metacity
      data: use preferences-system-windows as metacity icon
      fix distcheck
      bump version to 3.18.3, update NEWS

Alexander Larsson (1):
      ui: disable scaling support in GTK+

Iain Lane (1):
      theme: scale window decorations on HiDPI displays