Add a simple version of the toshiba acpi addon

[David Zeuthen]

On Fri, 2006-03-03 at 18:25 +0000, Richard Hughes wrote:
> * doc/spec/hal-spec.xml.in: Ammend the spec as now button.has_state
> and button.type are not mandatory.

Thanks, but I still think we need to list what buttons ButtonPressed
supports... e.g. 

  Id:wifi-power  
  Meaning:Used for the user to disable/enable wireless operation

  Id:brightness-up
  Meaning:Used for the user to increase LCD brightness

  ...

Without this it's difficult to

 a) write apps that consume these; and

 b) add support for other hardware

We need to be precise about this.

    David