[mutter] (6 commits) Non-fast-forward update to branch wip/carlosg/xdg-activation

[Carlos Garnacho <carlosg src gnome org>]

The branch 'wip/carlosg/xdg-activation' 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:

  1cdab39... build: Add support for "staging" wayland protocols
  1d6f10e... build: Add xdg-activation to build
  fcb3c19... core: Add ::timeout signal to MetaStartupSequence
  375cf4f... wayland: Implement the xdg-activation protocol

Commits added to the branch:

  4af0f05... udev: Move device tag detection into helper (*)
  8989c42... backend/native: Add udev rule to ignore vkms devices (*)
  cdf7db1... build: Add support for "staging" wayland protocols
  26a898c... build: Add xdg-activation to build
  97ad44e... core: Add ::timeout signal to MetaStartupSequence
  cea04cc... wayland: Implement the xdg-activation protocol

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