Update MinOverlapPlacement.cc
Update MinOverlapPlacement.cc

Skip any windows which are not in the same layer as the window to be placed.
olivergondza/fluxbox,luebking/fluxbox,olivergondza/fluxbox,naimdjon/fluxbox,lukoko/fluxbox,naimdjon/fluxbox,Arkq/fluxbox,luebking/fluxbox,olivergondza/fluxbox,Arkq/fluxbox,Arkq/fluxbox,Arkq/fluxbox,Arkq/fluxbox,naimdjon/fluxbox,lukoko/fluxbox,luebking/fluxbox,luebking/fluxbox,luebking/fluxbox,lukoko/fluxbox,lukoko/fluxbox,olivergondza/fluxbox,naimdjon/fluxbox,lukoko/fluxbox,olivergondza/fluxbox,naimdjon/fluxbox