allow 4px deadzone for clicks
allow 4px deadzone for clicks

For the shaky ones.
Since this introduces a visible gap between trigger and move event, we
temporarily manipulate the coordinates in the global last event what
covers the outdated patch #134

REQUEST: 178

Arkq/fluxbox,Arkq/fluxbox,Arkq/fluxbox,luebking/fluxbox,Arkq/fluxbox,Arkq/fluxbox,luebking/fluxbox,luebking/fluxbox,luebking/fluxbox,luebking/fluxbox