[RFC PATCH] Initial libudev input-hotplug support

[Matthew Garrett]

I think that this will currently break wacom. Wacom is set up to provide 
one input device per input mechanism - so typically we may have pen, 
stylus and eraser. The driver insists on each of these being declared as 
separate instances, so in hal we have a callout for wacoms that 
generates extra devices in the hal namespace. Each of these devices then 
corresponds to one of the input mechanisms. For this to work in a udev 
world, we either need to have a mechanism for a single udev event to 
generate (or remove) multiple input devices or alternatively to fix up 
wacom so it can be told to create multiple X input devices in a single 
instance.

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Matthew Garrett | mjg59 at srcf.ucam.org