ARM linker stub changes - placement, PIC

[Christophe LYON]

> 
> Looks OK.

Thanks.


>> +@ Test to ensure that ARM calls exceeding 32Mb generate stubs. FIXME
>> +@ Test to ensure that ARM calls exceeding 32Mb generate stubs. FIXME
> 
> Why FIXME?
> 

Oops sorry, it was just a reminder to me, so that I update the comments.
I will fix this before committing. Do I need to resubmit the updated 
comment for approval?

Christophe.