Upstream commit: 4bdcc1963bc2b5ba5f8e319e402d9eb2cb6096c1
- manual: make setrlimit() description less ambiguous
- manual/stdio: Clarify putc and putwc
- malloc: add multi-threaded tests for aligned_alloc/calloc/malloc
- malloc: avoid global locks in tst-aligned_alloc-lib.c
- resolv: Track single-request fallback via _res._flags (bug 31476)
- resolv: Do not wait for non-existing second DNS response after error (bug 30081)
- resolv: Allow short error responses to match any query (bug 31890)
- elf: Fix localplt.awk for DT_RELR-enabled builds (BZ 31978)
- Fix usage of _STACK_GROWS_DOWN and _STACK_GROWS_UP defines [BZ 31989]
- Linux: Make __rseq_size useful for feature detection (bug 31965)
- elf: Make dl-rseq-symbols Linux only
- nptl: fix potential merge of __rseq_* relro symbols
- s390x: Fix segfault in wcsncmp [BZ #31934]
- stdlib: fix arc4random fallback to /dev/urandom (BZ 31612)
- math: Provide missing math symbols on libc.a (BZ 31781)
- math: Fix isnanf128 static build (BZ 31774)
- math: Fix i386 and m68k exp10 on static build (BZ 31775)
- math: Fix i386 and m68k fmod/fmodf on static build (BZ 31488)
- posix: Fix pidfd_spawn/pidfd_spawnp leak if execve fails (BZ 31695)
