PATCH: Support armv6-m in libgloss

[Can Finner]

> You are right it should.
>
> I was trying to persuade Richard Earnshaw to let me delete the
> newlib/libc/sys/arm directory and just use the code in libgloss, but he
> objected and I have not yet had time to go through his alternative
> suggestion and implement it.
>
> So please, do feel free to submit a patch to synchronize libgloss and newlib
> and I'll review it and apply it.
>
Sorry for long delay, was on vacation last few days.
I will see what I can do when get some time.

Thanks very much.

Bin,
-- 
Regards.