[gtk/dnd-cleanups] (33 commits) ...drop: stop accessing GdkDrag fields

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  8ca3ac1... GtkIMContextSimple: Fix Wayland build when X11 support is d (*)
  e72ca43... Merge branch 'fix-wayland' into 'master' (*)
  986daa8... Merge branch 'dnd-cleanups' into 'master' (*)
  00a61f9... docs: Small updates (*)
  3ce3867... gl: Don't accidentally use ints for float variables (*)
  1a5e60b... paintable: Fix return_if_fail() statements (*)
  bcfd1bb... widgetpaintable: Redo implementation (*)
  a7cd191... widgetpaintable: Add a hack to make recursion not infloop (*)
  88af7b4... textview: Use snapshot on the sidebars (*)
  2f72353... gtk-demo: Update aspect-ratio when selecting new puzzle (*)
  4456b06... window: Update opaque region if background-color changes (*)
  60afd05... Update POTFILES.in (*)
  6afb6bb... x11: Set BackPixmap = None unconditionally (*)
  cbb1e74... textview: Only create cairo context in gtktextdisplay.c (*)
  6a7de80... text display: correct a comment (*)
  443f8dd... popover: Drop some dead code (*)
  a8926c9... gdk: Drop configure events (*)
  da3aaf3... gdk: Drop expose events (*)
  9c827cb... broadway: Stop using configure events (*)
  1172810... win32: Stop using expose and configure events (*)
  7ca6440... gdk: Drop map events (*)
  d148f26... Drop gdk_surface_withdraw (*)
  288086b... Fix up some doc mishaps (*)
  17386b5... Merge branch 'wip/matthiasc/kill-non-input-events' into 'ma (*)
  228f813... dnd: Drop gdk_drag_drop
  bc2f484... Revert "GdkDrop: drop the priv struct"
  1ea09a3... Add a private struct to GdkDrag
  034f89b... wayland: Drop an unused api
  9cc3e2c... gdkdrag: remove an unused member
  5ce3520... Add a GdkDrag::surface property
  298b6ee... wayland: Stop accessing GdkDrag members
  2d83bb1... x11: Stop using GdkDrag fields
  98ccb67... drop: stop accessing GdkDrag fields

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