Auto-sync with upstream branch master,
Upstream commit: 0487ebed2278b20971af4cabf186fd3681adccf0
- nptl: Add more missing placeholder abi symbol from nanosleep move
- sysdeps/riscv/start.S: rename .Lload_gp to load_gp (bug 24376)
- y2038: linux: Provide __timer_settime64 implementation
- y2038: linux: Provide __timer_gettime64 implementation
- timer: Decouple x86_64 specific timer_settime from generic Linux implementation
- timer: Decouple x86_64 specific timer_gettime from generic Linux implementation
- time: Introduce glibc's internal struct __itimerspec64
- Correct range checking in mallopt/mxfast/tcache [BZ #25194]
- misc/test-errno-linux: Handle EINVAL from quotactl
- <string.h>: Define __CORRECT_ISO_CPP_STRING_H_PROTO for Clang [BZ #25232]
- build-many-glibcs.py: Move sparcv8 to extra_glibcs