inputproto: Changes to 'multitouch-devel'

[Chase Douglas]

Rebased ref, commits from common ancestor:
commit cec7567863c3d363b6b75c707540cfe524f849ba
Author: Chase Douglas <chase.douglas at canonical.com>
Date:   Wed Sep 14 22:09:28 2011 -0500

    Revert addition of active_touches to device events
    
    I can't remember why it's there, and I don't see how it may be useful.
    If a client really wants to know how many touches are on the device,
    they can listen to raw events and count the number of active touches.
    
    (Real reason: extending events is hard :)
    
    Signed-off-by: Chase Douglas <chase.douglas at canonical.com>
    Reviewed-by: Peter Hutterer <peter.hutterer at who-t.net>