Bug#514237: debian-cd: Support non-i386 mirrors, and support D-I modules in non-main

[Frans Pop <elendil@planet.nl>]

On Thursday 05 February 2009, Frans Pop wrote:
> We currently use the Packages file from i386 to expand a task to a

s/currently use/currently always use/

> package list. Essentially this is broken because different arches can
> have different dependencies!

And also - probably more importantly - because some packages that belong 
to a task may not be available for all architectures.

This means that for example if a task lists a powerpc- or sparc-specific 
package, it will currently not get included on the CD (unless it gets 
included for other reasons of course).
This won't affect installs where a mirror is used, but can affect installs 
from CD/DVD only.