Auto-sync with upstream branch master
Upstream commit c1c0dea38833751f36a145c322ce53c9a08332e1
- Linux: Remove epoll_create, inotify_init from syscalls.list (#2154747)
- Linux: Reflow and sort some Makefile variables
- mach: Drop remnants of old_CFLAGS
- mach: Fix passing -ffreestanding when checking for gnumach headers
- Force use of -ffreestanding when checking for gnumach headers
- elf: Fix tst-relro-symbols.py argument passing
- x86: Prevent SIGSEGV in memcmp-sse2 when data is concurrently modified [BZ #29863]
- Allow _Qp_fgt in sparc64 localplt.data