GTK has one unfortunate bit of hardwiring; if a key is held down and
autorepeats, the default pushbutton widget-unactivate timeout is 250
ms, far slower than autorepeat, during which time the button will not
accept new activations.  We must defeat this to have autorepeat
accellerators function at full speed.


git-svn-id: https://svn.xiph.org/trunk/postfish@5478 0101bb08-14d6-0310-b084-bc0e0c8e3800