Just thought i'd let you guys know that I have succesfully modified the debian "linux-2.6" source package to build a Pi kernel and I have successfully booted the resulting kernel.
There is still some stuff to be done before I can upload to the repo but an upload should hopefully happen in the next day or so. I also hope to build a qemu kernel from the same source package.
BTW the rpi patch used to build this kernel is based on diffing bootc's 3.2.18 tree against plain 3.2.18 from kernel.org. I then added the resutling patch to the debian kernel packaging (so it is applied on top of the debian patches).