[mutter] (20 commits) Non-fast-forward update to branch wip/carlosg/input-in-backends

[Carlos Garnacho <carlosg src gnome org>]

The branch 'wip/carlosg/input-in-backends' 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:

  2658466... clutter: Remove "has_xinput" x11 API
  34249c0... Drop xinput2 version checks
  9fe756a... clutter: Move scattered x11 keymap code into ClutterKeymapX
  b95963b... clutter: Use G_DECLARE_DERIVABLE_TYPE for ClutterDeviceMana
  aaf3abb... clutter: Drop ClutterEventTranslator interface
  b4a0801... clutter: Remove ClutterEventExtender interface
  708c875... clutter/cally: Remove needless per-backend code in cally
  fa2f7e4... clutter: Drop _() define
  52fe47a... clutter: Remove event retrieval toggle
  0d2986d... clutter: Remove support for foreign stages
  d8b290f... clutter: Move X11 input to src/backends/x11
  b3ad427... backends: Don't use glib types
  dee4061... backends: Move nested stage to src/backends/x11/nested
  acd0b33... clutter: Drop unused function to translate to screen coordi
  2a7e5ce... clutter: Drop functions to get XVisualInfo
  05a6de0... clutter: Move evdev input to src/backends/native
  97522e7... clutter: Move tests to src/tests
  144b1f7... tests: Move clutter-test-utils.[ch] to src/tests

Commits added to the branch:

  84616be... window: Allow grab if the display focus is unset (*)
  1f133b3... compositor: Add MetaDnD private function to initialize XDND (*)
  2ae883f... clutter: Remove "has_xinput" x11 API
  3e06e11... Drop xinput2 version checks
  40476cc... clutter: Move scattered x11 keymap code into ClutterKeymapX
  f74fe9f... clutter: Use G_DECLARE_DERIVABLE_TYPE for ClutterDeviceMana
  67f1e7b... clutter: Drop ClutterEventTranslator interface
  52abcaf... clutter: Remove ClutterEventExtender interface
  060be37... clutter/cally: Remove needless per-backend code in cally
  b9e8e7e... clutter: Drop _() define
  5ce34fb... clutter: Remove event retrieval toggle
  f036098... clutter: Remove support for foreign stages
  f397745... clutter: Move X11 input to src/backends/x11
  bf22f5b... backends: Don't use glib types
  ce11f9e... backends: Move nested stage to src/backends/x11/nested
  451c6fb... clutter: Drop unused function to translate to screen coordi
  7fb2ec4... clutter: Drop functions to get XVisualInfo
  90eac1c... clutter: Move evdev input to src/backends/native
  d4424bd... clutter: Move tests to src/tests
  6bc05bc... tests: Move clutter-test-utils.[ch] to src/tests

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