PATCH: ARMV7M support

[Jeff Johnston]

Shaun Jackman wrote:
> 
> 
>>If this is approved, I'll commit it to libgloss too, unless explicitly
>>told not to do so.
> 
> 
> newlib/libc/sys/arm/ is out of sync with libgloss/arm/. You might have
> a little trouble applying your patch. I'd like to see libc/sys/arm
> permanently removed and --disable-newlib-supplied-syscalls become the
> default. Is this possible, Jeff?
> 

Regarding making the switch - it only requires the gcc side to change. 
I suppose once Mark's patches are in place, I can start campaigning for 
a gcc patch.

-- Jeff J.