Auto-sync with upstream branch master
Upstream commit: 75a193b7611bade31a150dfcc528b973e3d46231
- linux: Allow adjtime with NULL argument [BZ #26833]
- aarch64: Add unwind information to _start (bug 26853)
- bsd unlockpt: unlockpt needs to fail with EINVAL, not ENOTTY
- Rearrange bsd_getpt vs bsd_openpt and implement posix_openpt on BSD
- Remove __warndecl
- Remove __warn_memset_zero_len [BZ #25399]
- iconv: Accept redundant shift sequences in IBM1364 [BZ #26224]
- msg: Remove redundant #include <sys/msg.h> header
- tst-setuid1-static-ENV: Add $(common-objpfx)nss [BZ #26820]