[gtk] (7 commits) Non-fast-forward update to branch dnd-gestures-2

[Matthias Clasen <matthiasc src gnome org>]

The branch 'dnd-gestures-2' 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:

  2add776... Add an async read function for selection
  4113c3b... testlist3: Use async read api for selection
  28a65ce... testtreednd: Use the new asyn selection read

Commits added to the branch:

  dafcef6... Add an async read function for selection
  33d3ee6... testlist3: Use async read api for selection
  87f5cba... testtreednd: Use the new asyn selection read
  90906be... iconview: Avoid drag-data-received
  655e4b2... Add a text view mark/cursor test
  0af1db2... textview: Render visible marks better
  4688595... Adwaita: Make dnd marks in text views green