Alan, Martin, Linus, and anyone else who cares, ;)

	Here's a patch Martin and I put together a while ago to clean up the 
xquad_portio kludgery that's been floating around for too long.  I think 
this pretty much goes along with what you have in your tree, Alan.  It's 
a small patch, so if no one complains, please apply Linus.


Cheers!

-Matt