linux: Add recent clone/clone3 and missing signalfd flags.
The following flags have been introduced:
- CLONE_PIDFD (>=5.2)
- CLONE_INTO_CGROUP (>=5.7)
- SFD_CLOEXEC and SFD_NONBLOCK (>=2.6.27)
e3e6df17edAydin Mercan committed on 8/21/2021, 4:41:00 PM· committed by Veikka Tuominenparent724995e