xkb: Add struct Property as per spec (commented out)
xkb: Add struct Property as per spec (commented out)

The specification says that Property is a struct of two CountedString16
(name and value). This form can't be handled atm. correctly too. But,
add it as a comment so we've it at hand when we know what to do with it.

All credits go to Ran Benita, as he found this.

Signed-off-by: Daniel Martin <5ae2633454ceb931c1fd86ffad586b4dfc721833@gmail.com>

nbaum/xcb-proto,nbaum/xcb-proto