Auto-sync with upstream branch master
    
    Upstream commit: 89dc0372a9055e7ef86fe19be6201fa0b16b2f0e
    
    - Update syscall lists for Linux 5.14
    - Fix failing nss/tst-nss-files-hosts-long with local resolver
    - MIPS: Setup errno for {f,l,}xstat
    - Use Linux 5.14 in build-many-glibcs.py
    - locale: Add missing second argument to _Static_assert in C-collate-seq.c
    - Update hppa libm-test-ulps
    - Add generic C.UTF-8 locale (Bug 17318)
    - Add 'codepoint_collation' support for LC_COLLATE.
    - AArch64: Update A64FX memset not to degrade at 16KB
    - Revert "AArch64: Update A64FX memset not to degrade at 16KB"
    - Remove "Contributed by" lines
    - Port shared code information from the wiki
    - AArch64: Update A64FX memset not to degrade at 16KB
    - posix: remove some iso-8859-encoded characters
    - configure: Allow LD to be LLD 13.0.0 or above [BZ #26558]
    - hurd msync: Drop bogus test
    - hurd: Fix typo in msync