Auto-sync with upstream master
    
    Upstream commit: 1e2bffd05c36a9be30d7092d6593a9e9aa009ada
    
    - Add IBM858 charset (#1416405)
    - Update kernel version in syscall-names.list to 4.13
    - Add Linux 4.13 constants to bits/fcntl-linux.h
    - Add fcntl sealing interfaces from Linux 3.17 to bits/fcntl-linux.h
    - math: New generic powf, log2f, logf
    - Fix nearbyint arithmetic moved before feholdexcept (swbz#22225)
    - Mark __dso_handle as hidden (swbz#18822)
    - Skip PT_DYNAMIC segment with p_filesz == 0 (swbz#22101)
    - glob now matches dangling symbolic links (swbz#866, swbz#22183)
    - nscd: Release read lock after resetting timeout (swbz#22161)
    - Avoid __MATH_TG in C++ mode with -Os for pfcl (swbz#22146)
    - Fix dlclose/exit race (swbz#22180)
    - x86: Add SSE4.1 trunc, truncf (swbz#20142)
    - Fix atexit/exit race (swbz#14333)
    - Use execveat syscall in fexecve (swbz#22134)
    - Enable unwind info in libc-start.c and backtrace.c
    - powerpc: Avoid misaligned stores in memset
    - powerpc: build some IFUNC math functions for libc and libm (swbz#21745)
    - Removed redundant data (LC_TIME and LC_MESSAGES) for niu_NZ (swbz#22023)
    - Fix LC_TELEPHONE for az_AZ (swbz#22112)
    - x86: Add MathVec_Prefer_No_AVX512 to cpu-features (swbz#21967)
    - x86: Add x86_64 to x86-64 HWCAP (swbz#22093)
    - Finish change from “Bengali” to “Bangla” (swbz#14925)
    - posix: fix glob bugs with long login names (swbz#1062)
    - posix: Fix getpwnam_r usage (swbz#1062)
    - posix: accept inode 0 is a valid inode number (swbz#19971)
    - Remove redundant LC_TIME data in om_KE (swbz#22100)
    - Remove remaining _HAVE_STRING_ARCH_* definitions (swbz#18858)
    - resolv: Fix memory leak with OOM during resolv.conf parsing (swbz#22095)
    - Add miq_NI locale for Miskito (swbz#20498)
    - Fix bits/math-finite.h exp10 condition (swbz#22082)