Auto-sync with upstream branch master
    
    Upstream commit: fd70af45528d59a00eb3190ef6706cb299488fcd
    
    - Add the statx function
    - regexec: Fix off-by-one bug in weight comparison (#1582229)
    - nss_files: Fix re-reading of long lines (swbz#18991)
    - aarch64: add HWCAP_ATOMICS to HWCAP_IMPORTANT
    - aarch64: Remove HWCAP_CPUID from HWCAP_IMPORTANT
    - conform/conformtest.pl: Escape literal braces in regular expressions
    - x86: Use AVX_Fast_Unaligned_Load from Zen onwards.