[gentoo-releng] [PATCH] specs: add usbutils (& pciutils explicitly) to amd64/x86 installcds

[Ben Kohler]

We have needed usbutils on our installcds for a long time.  This is very 
useful to get usb networking & other hardware up early in the install 
procedure.

I have added that and also pciutils, which we currently get via a 
dependency of another package.  New installers use pciutils very often 
so we wouldn't want to accidentally lose this package.

I have only staged the change for the main x86/amd64 installcds but it 
could be applied to admincds as well.

-Ben