Sync with upstream branch release/2.34/master
    
    Upstream commit: 2fe2af88abd13ae5636881da2e26f461ecb7dfb5
    
    - i386: Remove broken CAN_USE_REGISTER_ASM_EBP (bug 28771)
    - Update syscall lists for Linux 5.15
    - powerpc: Fix unrecognized instruction errors with recent GCC
    - timezone: test-case for BZ #28707
    - timezone: handle truncated timezones from tzcode-2021d and later (BZ #28707)
    - Fix subscript error with odd TZif file [BZ #28338]
    - AArch64: Check for SVE in ifuncs [BZ #28744]
    - intl/plural.y: Avoid conflicting declarations of yyerror and yylex
    - Linux: Fix 32-bit vDSO for clock_gettime on powerpc32
    - linux: Add sparck brk implementation
    - Update sparc libm-test-ulps
    - Update hppa libm-test-ulps
    - riscv: align stack before calling _dl_init [BZ #28703]
    - riscv: align stack in clone [BZ #28702]
    - powerpc64[le]: Allocate extra stack frame on syscall.S
    - elf: Fix tst-cpu-features-cpuinfo for KVM guests on some AMD systems [BZ #28704]
    - nss: Use "files dns" as the default for the hosts database (bug 28700)
    - arm: Guard ucontext _rtld_global_ro access by SHARED, not PIC macro
    - mips: increase stack alignment in clone to match the ABI
    - mips: align stack in clone [BZ #28223]