[PATCH wayland-protocols] Add the tablet protocol

[Auke Booij]

On 6 November 2015 at 04:24, Peter Hutterer <peter.hutterer at who-t.net> wrote:
> Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>
> ---
> This is the revamped version of the tablet protocol for graphics tablets
> (e.g. Wacom tablets). Too many changes from the last version (a year ago or
> so), so I won't detail them, best to look at it with fresh eyes.

Would it be possible to cross-reference <enum> definitions in <arg>s,
as was made possible by the introduction of the enum attribute
recently? E.g.

 <arg name="tool_type" type="uint" enum="type" summary="the physical
tool type"/>
...
 <arg name="format" type="uint" enum="hardware_id_format" summary="the
type of the id" />
...
 <arg name="capability" type="uint" enum="capability" summary="the capability"/>
...
 <arg name="state" type="uint" enum="button_state" summary="Whether
the button was pressed or released"/>
...
 <arg name="type" type="uint" enum="type" summary="the tablet type
(internal, external, ...)"/>