[gtk: 6/6] Merge branch 'nested-popover-menu' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

commit 9501fc2c14c21a078d6e8262c14db2353bd42b52
Merge: 7547291450 1203dc501c
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Sep 10 01:09:31 2019 +0000

    Merge branch 'nested-popover-menu' into 'master'
    
    Nested popover menus
    
    See merge request GNOME/gtk!1076

 demos/widget-factory/widget-factory.ui |  25 ++--
 docs/reference/gtk/gtk4-sections.txt   |   2 +
 gtk/gtkmenusectionbox.c                |  82 ++++++++-----
 gtk/gtkmenusectionboxprivate.h         |   5 +-
 gtk/gtkmodelbutton.c                   | 210 ++++++++++++++++++++++++++++-----
 gtk/gtkpopover.c                       |  60 +++++++++-
 gtk/gtkpopovermenu.c                   | 148 ++++++++++++++++++++++-
 gtk/gtkpopovermenu.h                   |  18 +++
 gtk/gtkpopovermenubar.c                |   8 +-
 gtk/gtkpopovermenuprivate.h            |  11 +-
 tests/popover2.ui                      |  38 ++----
 tests/testpopover.c                    |  10 ++
 12 files changed, 514 insertions(+), 103 deletions(-)
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