removing /etc/hotplug.d/ support

[md@Linux.IT (Marco d'Itri)]

Currently only a very small number of packages using the deprecated
/etc/hotplug.d/ interface is left.
Keeping hotplug.d/ support is both a waste of resources on every system
(multiple programs needs to be run for every event, even if they are not
needed) and makes the transition from hotplug to something+udev much
harder (see the current coldplug thread on debian-devel).
The alternative is for packages to install in /etc/udev/ a file
containing RUN rules. Packages cannot support both interfaces at the
same time, or they would receive the hotplug events two times when using
udev.

I'd like to know your opinion about speeding up the transition and
removing right now support for hotplug.d/ in your packages, making them
depend on udev.

-- 
ciao,
Marco