[gtk] (17 commits) ...Merge branch 'wip/alexl/broadway7' into 'master'

[Alexander Larsson <alexl src gnome org>]

Summary of changes:

  c8d7b4a... broadway: Fix coordinates when drag move/resizeing (*)
  6040a73... Broadway: Send configure notify on move/resize too (*)
  90c5a5f... broadway: Update broadway_node_type_names (*)
  4dfe2e6... broadway: Initial restructuring of node tree diffing (*)
  f30ba56... broadway: Reintroduce smarter diffing (*)
  b58a366... broadway: Support patching nodes for textures and transform (*)
  f932d35... broadway: Optimize color matrix + texture nodes to pre-colo (*)
  f1ba948... broadway: Move gsk files to a subdirectory (*)
  43778be... broadway: Add minor comment (*)
  ab801fe... broadway: Fix handling of input with multiple in-process Gd (*)
  a966fe1... broadway: Keep track of surface owner and only send input t (*)
  54167ec... broadway: Add warning for unexpected roundtrip delays (*)
  7002688... broadway: More multi-display fixes (*)
  27e47d5... broadway: Change events and ops enums to straight ints (*)
  4e7eccb... broadway: Report some level of frame timings (*)
  5bc8f88... broadway: Optionally support data: uris instead of blobs (*)
  7c369f3... Merge branch 'wip/alexl/broadway7' into 'master'

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