[gtk+] (4 commits) Non-fast-forward update to branch wip/garnacho/dnd-grab

[Carlos Garnacho <carlosg src gnome org>]

The branch 'wip/garnacho/dnd-grab' 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:

  d5796a8... wayland: Implement DnD actions as per wl_data_device v3
  89b04fe... wayland: Unset button modifiers on pointer enter
  a86737f... wayland: Set weak reference on the current grab window
  1e3bef7... gdk: Document the functions that don't need calling on mana

Commits added to the branch:

  2d691a0... wayland: Implement DnD actions as per wl_data_device v3
  10fd9ed... wayland: Unset button modifiers on pointer enter
  1b2cc66... wayland: Set weak reference on the current grab window
  20d5067... gdk: Document the functions that don't need calling on mana