[glib: 11/11] Merge branch 'mcatanzaro/posix-spawn2' into 'main'

[Philip Withnall <pwithnall src gnome org>]

commit 5462612dc3532ef57ec112acac44b9e54d563dba
Merge: 2c07c1784 376e2915e
Author: Philip Withnall <philip tecnocode co uk>
Date:   Wed Dec 15 08:17:29 2021 +0000

    Merge branch 'mcatanzaro/posix-spawn2' into 'main'
    
    gspawn: Implement fd remapping for posix_spawn codepath, and fix file descriptor conflation issues
    
    Closes #2503 and #2506
    
    See merge request GNOME/glib!1968

 gio/tests/gsubprocess-testprog.c |  53 +++++++++-
 gio/tests/gsubprocess.c          | 216 ++++++++++++++++++++++++++++++++++++++-
 glib/gspawn.c                    | 180 +++++++++++++++++++++++---------
 3 files changed, 394 insertions(+), 55 deletions(-)
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