GNU C Library 2.39 released

Version 2.39of the GNU C Library has been released. Changes include integration withthe x86 shadow-stack mechanism, a couple ofnew posix_spawn() variants for working with control groups, pidfd_spawn() andpidfd_spawnp(), the C2X stdbit.h header, the removalof the libcrypt library, and more. See the release notesfor details.