Auto-sync with upstream branch master
Upstream commit: 734c60ebb607086ad6d67b2544d6b7baba72a652
- login: Move libutil into libc
- login: Rework hidden prototypes for __setutent, __utmpname, __endutent
- login: Hidden prototypes for _getpt, __ptsname_r, grantpt, unlockpt
- nptl_db: Re-use the ELF-to-abilist converter for ABI checking
- Add RFC 8335 Definitions from Linux 5.13
- nss: Fix NSS_DECLARE_MODULE_FUNCTIONS handling of _nss_*_endnetgrent
- s390x: Update math: redirect roundeven function
- posix: Add _Fork [BZ #4737]