[PATCH, ARM] Don't use __thumb2__ to select _REENT_SMALL

[Jeff Johnston]

Paul Brook wrote:
>>>> That said, I agree with Richard's point.  If the thumb2 flag is not a
>>>> proper check for a platform that requires a small reent struct, then it
>>>> shouldn't be used as such.
>>>>         
>>> Well, the whole idea that this is something that can be figured out from
>>> the target is wrong. It should really be a user visible configure option.
>>>       
>> Do you mean the existing --enable-newlib-reent-small configure option or
>> something different?
>>     
>
> Yes, exactly that.  In that case I suggest removing the __thumb2__ check 
> altogether.  It would be nice if reent-small didn't break the library ABI, but 
> that's a different issue.
>
> Paul
>   
Done.  I'm still willing to accept a patch to _REENT_SMALL and reclaim 
the unused locale variables.
I can do this if you don't want to.

-- Jeff J.