[gold][aarch64]Patch to support TLS

[Cary Coutant]

[Re-sending in plain text for the benefit of the binutils@ list. Arrgh.]

> BTW, I am getting a diff when a run automake on a clean tree now:

I regenerated Makefile.in and pushed.

Jing, are you using automake-1.11.1? (It would seem so, since the
comment at the top of Makefile.in says so, and the log entry from
August 8 shows it was updated along with Makefile.am, so I'm not sure
what went wrong here.)

-cary