[mutter] (68 commits) Non-fast-forward update to branch wip/gcampax/background

[Giovanni Campagna <gcampagna src gnome org>]

The branch 'wip/gcampax/background' 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:

 http://live.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  f3ec257... MetaBackgroundActor: import background rendering using libg
  9759760... Reintroduce background crossfading
  7571d8b... Compositor: remove the hidden group
  8d22336... MetaBackground: untie background rendering from MetaScreen
  51f6a4c... MetaWindowGroup: store aside the background actor
  f8f57d6... background-actor: add input & output box properties
  114c5ad... MetaBackground: reverse the role of GnomeBG and GSettings
  e9d47c2... MetaBackground: draw twice with different constants instead

Commits added to the branch:

  90f2a3a... mutter-window-actor: Improve unredirect heuristic (*)
  12dbb90... [l10n] Updated Italian translation. (*)
  ac49259... Bump version to 3.7.5 (*)
  d805813... Make work_area calculation funcs public and introspectible (*)
  3900aa1... screen: Add an introspectible wrapper for find_monitor_for_ (*)
  07273a0... window-actor: Ensure we always have a valid shape_region (*)
  84930f1... window-actor: Remove conditional checks for the shape regio (*)
  66185a4... window-actor: Remove the bounding region (*)
  3516902... Revert "window-actor: Remove the bounding region" (*)
  e48c3da... Revert "window-actor: Remove conditional checks for the sha (*)
  d48df24... Revert "window-actor: Ensure we always have a valid shape_r (*)
  f37dd25... Revert "screen: Add an introspectible wrapper for find_moni (*)
  6f873be... Revert "Make work_area calculation funcs public and introsp (*)
  093e101... Make work_area calculation funcs public and introspectible (*)
  32b7743... screen: Add an introspectible wrapper for find_monitor_for_ (*)
  19420f1... window-actor: Remove conditional checks for the shape regio (*)
  3fe5a67... window-actor: Remove the bounding region (*)
  a613a55... Support _NET_WM_OPAQUE_REGION (*)
  493f619... meta-window-actor: Fix uninitialized variable (*)
  5298d1c... meta-window-actor: Don't do check_needs_reshape when not ma (*)
  6f74a63... Updated Galician translations (*)
  b33b4a8... ui: Don't use gdk_device_manager_get_client_pointer (*)
  d794db8... core: Add a helper function to grab the old event mask of a (*)
  453020c... Make sure to include the old XI2 mask when selecting for ev (*)
  a2a3188... Fix compiler warnings (*)
  e914595... theme-viewer: Stop using deprecated GTK+ functions (*)
  8b21df9... barrier: Add a new Meta wrapper for pointer barriers (*)
  57c31a5... barrier: Add support for new barrier features in XInput 2.3 (*)
  d8f569e... display: Rename window_ids to xids (*)
  c64eb94... display: Remove an unused code path for enabling the compos (*)
  b3c572b... barrier: fix fallback for unsupported servers (*)
  d482590... Fix button check in meta_window_client_message (*)
  380154a... screen: Fix a potentially endless loop (*)
  a362c08... Fix build error introduced by d482590c84 (*)
  1c680be... meta-window-actor: Make sure that the shape_region is alway (*)
  c3ffd28... resize-popup: don't use a GtkFrame (*)
  34fc234... resize-popup: set a bigger margin (*)
  94e6e55... resize-popup: use a tooltip style for the resize popup wind (*)
  2942b22... screen: Don't try to move / resize OR windows on montior ch (*)
  9de142d... Punjabi: Translation updated (aalam) (*)
  3abaf50... MetaWindowActor: Use guint for bitfields (*)
  c9343e3... Implement freezing of updates during resize (*)
  7743c70... Move sync alarms to be per-window and permanent (*)
  7d43bde... Support properties with lists of XSyncCounter (*)
  70c0d39... Add support for an extended style of _NET_WM_SYNC_REQUEST_C (*)
  fbfab93... Send _NET_WM_FRAME_DRAWN messages (*)
  790bfca... MetaWindow: always resize the frame first when we have sync (*)
  04ef448... Handle _NET_WM_SYNC_REQUEST_COUNTER updates without redraw (*)
  b07aea4... Enable CLUTTER / COGL_ENABLE_EXPERIMENTAL_API globally (*)
  d8696c1... Use clutter_stage_set_sync_delay() (*)
  fcc178e... Use XSyncSetPriority() (*)
  74b1a9e... Add meta_compositor_monotonic_time_to_server_time() (*)
  2d9b8bb... Send _NET_WM_FRAME_TIMINGS messages (*)
  87fe968... Distinguish "no delay" frames from spontaneous drawing (*)
  0503f6b... Consistently use meta_grab_op_is_resizing() for _NET_WM_SYN (*)
  995e804... Bump Clutter and Cogl version requirements (*)
  579bf21... display: Pass timestamp to meta_display_end_grab_op (*)
  dbc9303... MetaBackgroundActor: import background rendering using libg
  3e723ca... Reintroduce background crossfading
  5a83ef7... Compositor: remove the hidden group
  0a1ee4a... MetaBackground: untie background rendering from MetaScreen
  f278fd9... MetaWindowGroup: store aside the background actor
  b61e221... MetaBackground: reverse the role of GnomeBG and GSettings
  7332eb3... MetaBackground: draw twice with different constants instead
  94ac7ff... Stop using GnomeBG for drawing the background
  f254879... MetaBackgroundActor: remove GLSL shader support
  db7fa79... MetaBackground: reintroduce animated backgrounds
  4f56cfb... MetaBackgroundActor: stop waiting synchronously on the firs

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