Commit 29b2fe40dc disabled it by reverting
commit d6bf71123d. We now add the promised
flag to opt-in. The flag is added to all Unix systems, but it really
only applies to Linux right now.
No ChangeLog because the whole UnixProcessParameters structure is new
and has its own changelog.
Task-number: QTBUG-104493
Task-number: QTBUG-111243
Task-number: QTBUG-111964
Change-Id: Icfe44ecf285a480fafe4fffd174d4effd3382495
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>