[AArch64] Only override the symbol dynamic decision on undefined weak symbol

[Nick Clifton]

Hi Jiong Wang wrote:

> bfd/
> 2017-06-28  Jiong Wang  <jiong.wang@arm.com>
> 
>          PR ld/21402
>          * elfnn-aarch64.c (elfNN_aarch64_allocate_dynrelocs): Only make
>          undefined weak symbols into dynamic.
>          (elfNN_aarch64_final_link_relocate): Generate runtime RELATIVE
>          relocation for non-dynamic symbols.
>          (elfNN_aarch64_finish_dynamic_symbol): Add sanity check.

Approved - please apply.

Cheers
  Nick