[gold patch] Fix internal error with -s

[Cary Coutant]

>> 2011-04-14 Cary Coutant  <ccoutant@google.com>
>>
>>       * gold/layout.cc (Layout::symtab_section_offset): New function.
>>       * gold/layout.h (Layout::symtab_section_offset): New function.
>>       * gold/reloc.cc (Sized_relobj::do_relocate): Call it.
>
> This is OK.

Thanks, committed.

-cary