[glib/glib-2-62: 8/8] Merge branch 'backport-1176-1183-1188-1191-glib-2-62' into 'glib-2-62'

[Simon McVittie <smcv src gnome org>]

commit 404b07183be224e70c8d1ef2d8370e48825c7902
Merge: 4b3d30963 c7618cce3
Author: Simon McVittie <simon mcvittie collabora co uk>
Date:   Tue Oct 29 14:20:56 2019 +0000

    Merge branch 'backport-1176-1183-1188-1191-glib-2-62' into 'glib-2-62'
    
    Backport !1176, !1183, !1188, !1191 to `glib-2-62`
    
    See merge request GNOME/glib!1194

 .gitlab-ci/cross_file_mingw64.txt |  1 +
 docs/reference/glib/cross.xml     |  1 +
 gio/gcredentials.c                | 42 +++++++++++++++++++--
 gio/gcredentialsprivate.h         | 77 +++++++++++++++++++++++++++++++++++++++
 gio/gdbusauth.c                   | 27 +++++++++++++-
 gio/tests/meson.build             |  6 ++-
 glib/gspawn.c                     | 27 ++++++--------
 glib/gtestutils.h                 |  2 +-
 8 files changed, 160 insertions(+), 23 deletions(-)
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