[metacity] Created tag 3.18.4

[Alberts Muktupāvels <muktupavels src gnome org>]

The unsigned tag '3.18.4' was created.

Tagger: Alberts Muktupāvels <alberts muktupavels gmail com>
Date: Sun Apr 24 16:46:06 2016 +0300

    Tag release 3.18.4

Changes since the last tag '3.18.3':

Alberts Muktupāvels (20):
      compositor: try to use root window background
      frame: expose meta_frame_get_mask
      compositor: add window back to compositor
      window: use the correct frame size during unmaximize
      compositor: use correct xid when removing window
      compositor: rename border_size to window_region
      compositor: add client_region
      compositor: rename window_size to visible_region
      compositor: create picture with window mask
      compositor: keep more info when window is shaded
      compositor: redo xrender_get_window_surface
      compositor: use window mask in paint_windows
      theme: clip metacity theme drawing to rounded corners
      frames: revert "clip drawing to visible region for metacity themes"
      frame: always use the client window's visual
      frames: use CAIRO_CONTENT_COLOR for cache surface
      core: hide new symbols
      compositor: don't crash when xregion is None
      compositor: don't destroy client_region on unmap
      bump version to 3.18.4, update NEWS

Anders Jonsson (1):
      Updated Swedish translation

Florian Müllner (1):
      theme (gtk+): stop hiding titlebar buttons in dialogs

Jasper St. Pierre (1):
      window: clear the frame borders before calculating the unfullscreen rect

Owen W. Taylor (1):
      frame: cache borders