[mutter] (15 commits) Non-fast-forward update to branch gbsneto/silence-warnings

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

The branch 'gbsneto/silence-warnings' 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:

  642adba... tests: Remove unused variables
  7e666ec... tests: Enumerate all possible events
  119385d... tests: Remove extra const
  6e456ce... tests: Remove deprecated ATK functions
  3298c0b... clutter: Drop g_object_newv from ClutterScriptParser
  e153fdf... theme: Drop gtk_css_provider_get_default()
  d84cebc... cogl: Silence some introspection warnings

Commits added to the branch:

  5fc07fc... window: Store tile mode as MetaTileMode (*)
  640a04d... window: Make edge constraint code more readable (*)
  27fee69... wayland/xdg-shell: Add helper for adding state enum values (*)
  d59cf98... wayland/gtk-shell: Fix signedness of resource version varia (*)
  180bb02... wayland/gtk-shell: Use helper to fill state array (*)
  4f3de88... wayland/legacy-xdg-shell: Use helper to fill state array (*)
  4673eea... wayland/xdg-shell: Add toplevel tile state support (*)
  4a7a803... README: Mention usage by Gala (*)
  3483be8... tests: Remove unused variables
  426d7f3... tests: Enumerate all possible events
  b5c4437... tests: Remove extra const
  cbf6e74... tests: Remove deprecated ATK functions
  d7e1dcc... clutter: Drop g_object_newv from ClutterScriptParser
  e7d8332... theme: Drop gtk_css_provider_get_default()
  a05ec5e... cogl: Silence some introspection warnings

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