prepare for class devices showing up in /sys/devices

[David Zeuthen]

On Tue, 2006-07-04 at 15:48 +0200, Kay Sievers wrote:
> With kernel 2.6.18, it's possible for class devices to show up in the
> /sys/devices/ tree.
> 
> This just prepares HAL to detect the correct device type. In the end,
> we should definitely merge the classdev and physdev types in HAL to a
> single device, cause it doesn't really makes sense to distinguish between
> the both.

Looks complicated. Better get this in as early as possible though so
please commit.

Should this be backported to 0.5.7 and should we do 0.5.7.1?

Thanks,
David