[gtk: 5/5] Merge branch 'tooltip-redo' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

commit 53a634e23ea29ae97686ce3b07741bd72f0aa06f
Merge: e12a580b0b 156935e0e9
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Dec 30 03:24:58 2019 +0000

    Merge branch 'tooltip-redo' into 'master'
    
    Tooltip redo
    
    See merge request GNOME/gtk!1271

 docs/reference/gtk/migrating-3to4.xml |  10 +
 gtk/gtktooltip.c                      | 190 +++++++--------
 gtk/gtktooltipwindow.c                | 424 +++++++++++++++++++++++++++++++++-
 gtk/gtktooltipwindowprivate.h         |   9 +
 gtk/gtkwidget.c                       |  67 +-----
 gtk/gtkwidget.h                       |   5 -
 gtk/ui/gtktooltipwindow.ui            |   7 +-
 tests/testtooltips.c                  |  68 ++----
 8 files changed, 550 insertions(+), 230 deletions(-)
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