[mutter] (3 commits) Non-fast-forward update to branch wip/exalm/focused-appearance

[Marge Bot <marge-bot src gnome org>]

The branch 'wip/exalm/focused-appearance' 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:

  c6ab663... stack: Check workspace in get_default_focus_window()
  b97de1d... workspace: Add meta_workspace_get_default_focus_window()
  301a316... window: Make default focus window on each workspace appear 

Commits added to the branch:

  448ffae... stack: Check workspace in get_default_focus_window()
  7afefbb... workspace: Add meta_workspace_get_default_focus_window()
  ed391eb... window: Make default focus window on each workspace appear