Auto-sync with upstream branch master
    
    Upstream commit: d3bf2f5927d51258a51ac7fde04f4805f8ee294a
    
    - elf: Do not run DSO sorting if tunables is not enabled
    - riscv: Build with -mno-relax if linker does not support R_RISCV_ALIGN
    - x86-64: Replace movzx with movzbl
    - regex: Unnest nested functions in regcomp.c
    - Use Linux 5.15 in build-many-glibcs.py
    - elf: Assume disjointed .rela.dyn and .rela.plt for loader
    - i386: Explain why __HAVE_64B_ATOMICS has to be 0
    - benchtests: Add hypotf
    - benchtests: Make hypot input random
    - arm: Use have-mtls-dialect-gnu2 to check for ARM TLS descriptors support
    - arm: Use internal symbol for _dl_argv on _dl_start_user
    - x86-64: Remove Prefer_AVX2_STRCMP
    - x86-64: Improve EVEX strcmp with masked load