moving two speedups to 3.3 branch

[Mike Stump]

On Saturday, February 8, 2003, at 02:59 AM, Segher Boessenkool wrote:
> Just be sure to not forget Richard's obvious fix for this patch:
> Quoting him:
>
> > Note that
> >
> > > -   if (word & ~ (unsigned HOST_WIDE_INT) 0xffffffff)
> > > +   if (word & ~0xffffffff)
> >
> > is incorrect.  The cast is still required for 64-bit hosts.
> > I replaced it during the commit.

Yes, I knew about this.  I was going to take the checkin from cvs to 
avoid missing any of his work.  Thanks for pointing it out...