[gtk: 2/2] Merge branch 'icontheme-api' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

commit d58a381c93fabbcae3749f167b200ef198f8a709
Merge: db1ca92790 66307f00f1
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Feb 19 01:50:49 2020 +0000

    Merge branch 'icontheme-api' into 'master'
    
    Icontheme api
    
    Closes #2410
    
    See merge request GNOME/gtk!1449

 demos/gtk-demo/fishbowl.c            |  22 +-
 docs/reference/gtk/gtk4-sections.txt |  11 +-
 gtk/gtkcssiconthemevalue.c           |   2 +-
 gtk/gtkicontheme.c                   | 519 ++++++++++++++++++++++++-----------
 gtk/gtkicontheme.h                   |  32 +--
 tests/testicontheme.c                |  17 +-
 testsuite/gtk/defaultvalue.c         |   4 +
 testsuite/gtk/icontheme.c            |  42 +--
 8 files changed, 421 insertions(+), 228 deletions(-)
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