[RFA] Don't warn when using ld --wrap and code in Thumb-state on ARM

[Nick Clifton]

Hi Matt,

> 2010-04-01  Matthew Gretton-Dann<matthew.gretton-dann@arm.com>
>
> 	* elflink.c (_bfd_elf_merge_symbol): Tighten up the test for
> 	early exit due to merging the same weak symbol to test that the
> 	symbols are actually weak.

Approved - please apply.

Cheers
   Nick