rollback part of 5dee576 - avoiding skipping nodes with <= 3 pixels as this fixed only symptoms of the hextree crash and not the root cause (note: divide by zero fix is maintained)
rollback part of 5dee576 - avoiding skipping nodes with <= 3 pixels as this fixed only symptoms of the hextree crash and not the root cause (note: divide by zero fix is maintained)

qianwenming/mapnik,qianwenming/mapnik,mbrukman/mapnik,davenquinn/python-mapnik,kapouer/mapnik,lightmare/mapnik,jwomeara/mapnik,CartoDB/mapnik,mapycz/mapnik,whuaegeanse/mapnik,Mappy/mapnik,strk/mapnik,zerebubuth/mapnik,davenquinn/python-mapnik,mapycz/python-mapnik,Airphrame/mapnik,mapnik/mapnik,mapycz/mapnik,Uli1/mapnik,stefanklug/mapnik,qianwenming/mapnik,tomhughes/python-mapnik,mbrukman/mapnik,kapouer/mapnik,stefanklug/mapnik,pramsey/mapnik,pnorman/mapnik,lightmare/mapnik,Mappy/mapnik,pramsey/mapnik,tomhughes/python-mapnik,garnertb/python-mapnik,tomhughes/mapnik,whuaegeanse/mapnik,naturalatlas/mapnik,rouault/mapnik,rouault/mapnik,davenquinn/python-mapnik,garnertb/python-mapnik,tomhughes/python-mapnik,strk/mapnik,mapnik/mapnik,yohanboniface/python-mapnik,pnorman/mapnik,Mappy/mapnik,lightmare/mapnik,Airphrame/mapnik,zerebubuth/mapnik,Uli1/mapnik,cjmayo/mapnik,naturalatlas/mapnik,tomhughes/mapnik,naturalatlas/mapnik,sebastic/python-mapnik,pramsey/mapnik,Airphrame/mapnik,naturalatlas/mapnik,cjmayo/mapnik,mapycz/mapnik,yiqingj/work,mapnik/python-mapnik,qianwenming/mapnik,mapnik/mapnik,strk/mapnik,CartoDB/mapnik,jwomeara/mapnik,pramsey/mapnik,cjmayo/mapnik,Mappy/mapnik,yiqingj/work,tomhughes/mapnik,stefanklug/mapnik,mbrukman/mapnik,zerebubuth/mapnik,mapycz/python-mapnik,yohanboniface/python-mapnik,manz/python-mapnik,rouault/mapnik,mapnik/mapnik,whuaegeanse/mapnik,Airphrame/mapnik,mbrukman/mapnik,tomhughes/mapnik,cjmayo/mapnik,yiqingj/work,yiqingj/work,mapnik/python-mapnik,yohanboniface/python-mapnik,sebastic/python-mapnik,manz/python-mapnik,pnorman/mapnik,jwomeara/mapnik,stefanklug/mapnik,jwomeara/mapnik,strk/mapnik,CartoDB/mapnik,Uli1/mapnik,kapouer/mapnik,qianwenming/mapnik,rouault/mapnik,lightmare/mapnik,mapnik/python-mapnik,pnorman/mapnik,Uli1/mapnik,garnertb/python-mapnik,kapouer/mapnik,manz/python-mapnik,sebastic/python-mapnik,whuaegeanse/mapnik