[mutter] (15 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:

  a7f8608... protocol: Add wayland-tablet.xml
  c437a1b... wayland: Add MetaWaylandTablet
  9b502ae... wayland: Add MetaWaylandTabletManager
  1c2aa96... wayland: Initialize the MetaWaylandTabletManager
  55dfea6... wayland: Let MetaWaylandTabletManager process tablet events
  63f49e7... wayland: Add wl_tablet cursor rendering and management func
  afdaf60... wayland: Add method to update wl_tablet cursors out of even
  338d15b... core: Update tablet cursors
  dea46da... wayland: Add MetaWaylandTabletTool
  b1534e9... wayland: Implement wl_tablet_manager.tool_added
  d9e11b1... wayland: Maintain wl_tablet current focus window and tool.
  8f07588... wayland: Handle wl_tablet cursor updates
  111c0fd... wayland: emit wl_tablet motion/button/axis events
  0affb1e... wayland: Ignore motion events with no axes from tablets

Commits added to the branch:

  c5cf2de... wayland: Refactor MetaWaylandSurfaceRoleCursor
  59c24c9... protocol: Add wayland-tablet.xml
  6aec8eb... wayland: Add MetaWaylandTablet
  7efc4d6... wayland: Add MetaWaylandTabletManager
  e39a757... wayland: Initialize the MetaWaylandTabletManager
  cb1c579... wayland: Let MetaWaylandTabletManager process tablet events
  785a370... wayland: Add wl_tablet cursor rendering and management func
  997ca59... wayland: Add method to update wl_tablet cursors out of even
  a479dc1... core: Update tablet cursors
  1ae37a6... wayland: Add MetaWaylandTabletTool
  851f804... wayland: Implement wl_tablet_manager.tool_added
  6757613... wayland: Maintain wl_tablet current focus window and tool.
  345dd48... wayland: Handle wl_tablet cursor updates
  0913022... wayland: emit wl_tablet motion/button/axis events
  b927235... wayland: Ignore motion events with no axes from tablets