Moderate: glibc security, bug fix, and enhancement update (Oracle Linux 8)

[2.28-164.0.1]
- Merge of RH patches for ol8-u5 beta release
Review-exception: Routine merge
- Provide glibc.pthread.mutex_spin_count tunable for pthread adaptive
- spin mutex
Orabug: 27982358.
Reviewed-by: Qing Zhao <qing.zhao@oracle.com>
- add Ampere emag to tunable cpu list (Patrick McGehearty)
- add optimized memset for emag
- add an ASIMD variant of strlen for falkor
- Orabug: 2700101.
- Modify glibc-ora28849085.patch so it works with RHCK kernels.
- Orabug: 28849085.
- Make _IO_funlockfile match __funlockfile and _IO_flockfile match __flockfile
- Both should test
- if (stream->_flags & _IO_USER_LOCK) == 0)
- _IO_lock_lock (*stream->_lock);
- OraBug: 28481550.
Reviewed-by: Qing Zhao <qing.zhao@oracle.com>

[2.28-164]
- librt: fix NULL pointer dereference (#1966472).

[2.28-163]
- CVE-2021-33574: Deep copy pthread attribute in mq_notify (#1966472)

[2.28-162]
- CVE-2021-35942: wordexp: handle overflow in positional parameter number
(#1979127)

[2.28-161]
- Improve POWER10 performance with POWER9 fallbacks (#1956357)

[2.28-160]
- Backport POWER10 optimized rawmemchr for ppc64le (#1956357)

[2.28-159]
- Backport additional ifunc optimizations for ppc64le (#1956357)

[2.28-158]
- Rebuild with new binutils (#1946518)

[2.28-157]
- Consistently SXID_ERASE tunables in sxid binaries (#1934155)

[2.28-156]
- Backport ifunc optimizations for glibc for ppc64le (#1918719)

[2.28-155]
- CVE-2021-27645: nscd: Fix double free in netgroupcache (#1927877)

[2.28-154]
- Add IPPROTO_ETHERNET, IPPROTO_MPTCP, and INADDR_ALLSNOOPERS_GROUP defines
(#1930302)

[2.28-153]
- Support SEM_STAT_ANY via semctl. Return EINVAL for unknown commands to semctl,
msgctl, and shmctl. (#1912670)

[2.28-152]
- Update syscall-names.list to 5.7, 5.8, 5.9, 5.10 and 5.11. (#1871386)