make check failure on x86-64 with abilist

[Roland McGrath]

> So, should we make it internal now?  I don't see where it's used and
> it's not exported in /usr/include.

Sounds fine to me.

> Btw. make check will always abort if the abi check fails, it's not
> possible to rerun make check and continue - like it's done with all
> other tests that create a .out file,

That means you didn't lose anything.  make check will always update all
.out files, and then do check-abi (show you the diff).