The internals of XTest are used by Xi and Xkb, and both Xi and Xkb are
always required, so it makes little sense to have XTest place data in
a devPrivate, especially a devPrivate which is only available when the
XTest extension is enabled.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>