kernel defconfig, debugging, preemption, and very noticeable speedups/ debugging

[Radek Polak]

Werner Almesberger wrote:

> I would agree that many debug options are indeed only useful when
> chasing a bug, but some also produce diagnostics useful for
> getting a first idea of what's happening. We would win little if
> users would normally run an extremely lean kernel but get asked to
> install some fat debug kernel each time they report a bug.

I like the idea of two kernels - production and debugging. IMO it's the right 
way to go. I'll do it for next QtMoko release.

Regards

Radek