Putting in my top level changes

[Nathanael Nerode]

As discussed, I am going to start dropping in my top-level changes a 
little bit at a time, trying making sure that there's a GDB snap done 
between each small set of changes.  The first two little changes went 
in today.

Given the glacial rate at which gcc is moving, I expect I'll have src in 
sync with the branch I'm working on in gcc before the branch lands, even 
when I'm only dropping in a couple of changes per day.

--Nathanael