Auto-sync with upstream branch master
Upstream commit: 7b36d26b22d147ffc347f427f9fd584700578a94
- CVE-2018-19591: if_nametoindex: Fix descriptor for overlong name (#1654000)
- Mutex: Add pthread mutex tunables
- stdlib: assert on NULL function pointer in atexit etc. (swbz#20544)
- Enable VDSO on i386 statically linked programs
- posix: Use posix_spawn on system
- posix: Use posix_spawn on popen (swbz#17490, swbz#22834)
- Fix _dl_profile_fixup data-dependency issue (swbz#23690)
- Enable VDSO for static linking on aarch64