64-bit PowerPC Altivec support

[Aldy Hernandez]

On Fri, Oct 17, 2003 at 10:45:37AM -0400, David Edelsohn wrote:
> 	Hartmut and Segher report the following revised patch bootstraps
> without regression on powerpc-unknown-linux-gnualtivec and
> powerpc64-unknown-linux-gnualtivec.  The original patch had a bug in the
> builtin expander for dst*.
> 
> 	Okay for mainline?

Aiiight.

Segher mentioned that this patch fixes a couple PRs.  Can the PRs be
closed, and mentioned in the ChangeLog?

Thanks.