[Patch, AARCH64] gc-section support

[nick clifton]

Hi Venkataramanan,

> 2013-02-21  Venkataramanan Kumar<venkataramanan.kumar@linaro.org>
>
>          * elf64-aarch64.c (elf_backend_can_gc_sections): Enable
> gc-section support.
>          (elf64_aarch64_gc_sweep_hook): Handle GOT, TLS and PLT related relocs.
>
> LD
>
> 2013-02-21  Venkataramanan Kumar<venkataramanan.kumar@linaro.org>
>
>          * lib/ld-lib.exp (check_gc_sections_available): Remove aarch64
> from list of
>          targets that don't support gc-section.

Approved and applied.

Cheers
   Nick