[ob] Regenerate src/configure with 000227

[DJ Delorie]

> Just FYI, I've committed the attached as `obvious'.  It regenerates 
> src/configure using (hopefully) the correct autoconf.  Without this the 
> build barfs with the weird syntax error:

I would argue against any autoconf *snapshot* being the "right" one.
Aren't we supposed to be using the official fsf release of 2.13?  Your
change added the sitefile code, which wasn't there before, so it's not
just a bugfix - it's a feature change as well.

Plus, you need to test this "obvious" change in the gcc tree and apply
it there also - the trees are out of sync now, but they should be in
sync.