[gtk] (9 commits) ...Remove gtk_widget_intersect

[Timm Bäder <baedert src gnome org>]

Summary of changes:

  c17c18f... widget: Remove one translate_coordinates copy (*)
  5ea211b... Revert "gldriver: Don't create surfaces to upload textures" (*)
  12378f0... gl renderer: Expand matrix metadata extraction (*)
  c0cf592... gl renderer: Cache offscreen textures per node, not size (*)
  2bd02d9... popover: Get rid of a gtk_widget_get_allocation call (*)
  7c020bf... inspect-button: Remove custom pick() implementation (*)
  5907ff6... gl renderer: Render non-trivial transforms to a texture (*)
  f598836... popover: Don't recalculate position if unmapped (*)
  904fd5f... Remove gtk_widget_intersect

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