[mutter] (57 commits) Non-fast-forward update to branch wip/tablet-protocol

[Carlos Garnacho <carlosg src gnome org>]

The branch 'wip/tablet-protocol' 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:

  c4f642d... protocol: Add wayland-tablet.xml
  8a34ff5... wayland: Add MetaWaylandTablet
  494b4d7... wayland: Add MetaWaylandTabletManager
  fd9e630... wayland: Initialize the MetaWaylandTabletManager
  38a080b... wayland: Let MetaWaylandTabletManager process tablet events
  cc89e4d... core: Avoid updating cursor position on tablet events

Commits added to the branch:

  cc7af83... prefs: Correct the MetaPreference value for workspace names (*)
  9abcf42... prefs: Remove per_window flag from MetaKeyPref (*)
  5c60ea6... keybindings: Consistently use slice allocation for MetaKeyB (*)
  87eb5f8... frames: Simplify our frame title management (*)
  b6d070b... wayland: Seal SHM buffers before access (*)
  0d5c24f... Updated Spanish translation (*)
  73c4342... Updated Galician translations (*)
  6609d9c... iconcache: Fix icon data copy into cairo surface (*)
  0484ef1... MetaWindow: Change icon properties to be of pointer type (*)
  f71315e... frames: Fix window-type/frame-type mix-up (*)
  625d3de... backends: Make KMS EDID information equal to X11's (*)
  152b2da... barrier: Make X related hook more clearly named (*)
  5f91a62... barriers: Separate implementation from public API (*)
  ef32bbd... x11/barrier: Fix build (*)
  5c66bee... display: Remove ungrab_should_not_cause_focus_window (*)
  f083935... barrier: Fix type cast macros (*)
  460e1fd... backends: Add MetaInputSettings (*)
  3c06f2d... backends/x11: Implement X11-specific MetaInputSettings (*)
  2d878d3... backends/native: Add libinput-based MetaInputSettings imple (*)
  049f67d... native: Remove previous listener for keyboard settings (*)
  9d73b4e... wayland: Use the new keyboard settings location for repeat  (*)
  71c4138... monitor-manager: Add method to find an output matrix (*)
  1dea181... input-settings: Handle device-to-output mapping (*)
  db384a6... backends/native: Implement support for pointer barriers (*)
  0bfebc3... build: Fix gtk-doc build failure when native backend is dis (*)
  22c13b3... plugins/Makefile.am: Don't fail when trying to remove nonex (*)
  b91461e... place: Fix workspace check when collecting relevant windows (*)
  ce14bde... frames: Remove the destroy_event handler (*)
  d561b3b... frames: Clutterify frame event handling (*)
  7e7c8ec... backend-x11: Also spoof Enter/Leave notifies as well (*)
  764c3dd... display: Fix moving grab op check (*)
  9d7af8a... configure: Require gsettings-desktop-schemas >= 3.15.4 (*)
  8ef48a9... configure: Require clutter-1.0 >= 1.21.3 (*)
  422dded... window-x11: Remove duplicated condition (*)
  e294f6d... window-x11: Fix typo (*)
  a2ff8f4... stack: Fix a leak (*)
  3a5a647... Bump version to 3.15.4 (*)
  3356a43... Updated Hebrew translation (*)
  ad90b7d... monitor-manager: Initialize MetaOutput even when we can't g (*)
  4d23e7c... wayland: Fix caching of surface state (*)
  05353c1... frame: Don't redraw immediately when we resize (*)
  3f2d658... monitor-manager: Expose MetaMonitorManager to introspection (*)
  7f19db1... monitor-manager: Expose a method to get a monitor from an o (*)
  72f5a36... compositor: Update composite overlay window before unredire (*)
  8bbf1aa... protocol: Add wayland-tablet.xml
  5cca6f1... wayland: Add MetaWaylandTablet
  98891d4... wayland: Add MetaWaylandTabletManager
  1a7f439... wayland: Initialize the MetaWaylandTabletManager
  a97cf97... wayland: Let MetaWaylandTabletManager process tablet events
  803b352... wayland: Add wl_tablet cursor rendering and management func
  6aa28f2... wayland: Add method to update wl_tablet cursors out of even
  aff6037... core: Update tablet cursors
  7558eb8... wayland: Add MetaWaylandTabletTool
  d9f0cd9... wayland: Implement wl_tablet_manager.tool_added
  28c94ff... wayland: Maintain wl_tablet current focus window and tool.
  c4b3856... wayland: Handle wl_tablet cursor updates
  a5b16b8... wayland: emit wl_tablet motion/button/axis events

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