[PATCH v4] Add and use new glibc-internal futex API.

[Torvald Riegel]

On Wed, 2015-07-01 at 13:20 +0200, Torvald Riegel wrote:
> Tested on x86_64-linux.  No regressions except that I am getting a
> check-local-headers failure:
> *** $(common-objpfx)stdio-common/scanf15.o:
> uses /usr/include/bits/syscall.h
> *** /usr/include/bits/syscall.h: uses /usr/include/bits/syscall.h:
> *** $(common-objpfx)stdio-common/scanf17.o:
> uses /usr/include/bits/syscall.h
> *** /usr/include/bits/syscall.h: uses /usr/include/bits/syscall.h:
> Any advice on how to fix that?

And that regression goes away with a fresh build, not an incremental
build.  Sigh.