[gtk/matthiasc/for-master] (26 commits) ...broadway: Remove SURFACE_IS_TOPLEVEL

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  b8db9e1... Merge branch 'matthiasc/for-master' into 'master' (*)
  71323a8... wayland/popup: Remove unnecessary checks when mapping popup (*)
  f0b0076... wayland/popup: Emit un-withdrawn event earlier (*)
  7edfcc3... Merge branch 'wip/wayland-fix-popup-grabs' into 'master' (*)
  833b564... x11: Avoid crashes in dnd (*)
  f93d0f8... x11: Keep a ref on GdkDrag objects (*)
  14122d1... x11: Export gdk_x11_surface_get_root_coords privately (*)
  7c1cfc5... x11: Fix dnd coordinate handling (*)
  ec383a2... Add detail to gdk_drag_begin docs (*)
  8d5cece... Merge branch 'x11-dnd-fixes' into 'master' (*)
  b0f6996... gdk: Remove gdk_surface_register_dnd() (*)
  992173c... x11: Register DND atoms with all other atoms (*)
  a19066b... filechooserwidget: Stop using selection data (*)
  a4f7e2c... droptarget: Remove selectiondata read functions (*)
  a62d78b... selection: Remove GtkSelectionData (*)
  6442ec2... gdk: Remove gdk_utf8_to_string_target() (*)
  6c61c7b... Don't use GdkAtom where const char * is used (*)
  28dced5... gdk: Remove gdk_text_property_to_utf8_list_for_display() (*)
  4280ca2... device: gdk_device_list_axes() => gdk_device_get_axis_names (*)
  6e935d4... x11: Get rid of GdkAtom and APIs supporting it. (*)
  60307da... wayland: Replace final mention of GdkAtom (*)
  f536cf0... win32: Get rid of GdkAtom (*)
  cc7c1fe... gdk: Remove GdkAtom (*)
  9036d49... Merge branch 'wip/otte/dnd' into 'master' (*)
  9d2d4a6... Update POTFILES.in (*)
  247a68d... broadway: Remove SURFACE_IS_TOPLEVEL

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