TOUCH_CLIENT_ID is set if the touch was generated from a client ID instead
of a DDX/driver touch ID. i.e. submitted by the dix.
TOUCH_END is a special flag that's required to force the touch to end.
Since the protocol with grab replaying and pointer emulation is rather
complex, it's quite hard to know otherwise when a touch sequence should
really die.
The others do what it says on the imaginary box.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Chase Douglas <chase.douglas@canonical.com>