[Bug libgomp/80822] libgomp incorrect affinity when OMP_PLACES=threads

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80822

--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Should apply cleanly against 6.x, 7.x as well as current trunk.