bug #1042: use du to calculate image sizes, works with dirs
bug #1042: use du to calculate image sizes, works with dirs

mattthias/one,hsanjuan/one,abelCoronado93/one,mattthias/one,OpenNebula/one,juanmont/one,Terradue/one,ggalancs/one,tuxmea/one,atodorov-storpool/one,juanmont/one,unistra/one,OpenNebula/one,alvarosimon/one,cloudweavers/one,baby-gnu/one,tuxmea/one,fasrc/one,fasrc/one,atodorov-storpool/one,mattthias/one,abelCoronado93/one,spirit03/one,ggalancs/one,hsanjuan/one,mattthias/one,OpenNebula/one,tuxmea/one,tuxmea/one,baby-gnu/one,mattthias/one,unistra/one,goberle/one,juanmont/one,cloudweavers/one,goberle/one,OpenNebula/one,abelCoronado93/one,fasrc/one,unistra/one,unistra/one,hsanjuan/one,alvarosimon/one,ggalancs/one,atodorov-storpool/one,hsanjuan/one,ggalancs/one,OpenNebula/one,mattthias/one,dberzano/opennebula-torino,goberle/one,ohamada/one,tuxmea/one,ggalancs/one,cloudweavers/one,atodorov-storpool/one,tuxmea/one,atodorov-storpool/one,spirit03/one,atodorov-storpool/one,ohamada/one,baby-gnu/one,juanmont/one,hsanjuan/one,alvarosimon/one,goberle/one,cloudweavers/one,spirit03/one,fasrc/one,tuxmea/one,atodorov-storpool/one,Terradue/one,Terradue/one,spirit03/one,abelCoronado93/one,abelCoronado93/one,baby-gnu/one,hsanjuan/one,dberzano/opennebula-torino,ggalancs/one,dberzano/opennebula-torino,cloudweavers/one,baby-gnu/one,juanmont/one,ohamada/one,fasrc/one,Terradue/one,ohamada/one,spirit03/one,baby-gnu/one,fasrc/one,abelCoronado93/one,spirit03/one,fasrc/one,abelCoronado93/one,goberle/one,baby-gnu/one,ohamada/one,spirit03/one,OpenNebula/one,alvarosimon/one,abelCoronado93/one,alvarosimon/one,ggalancs/one,hsanjuan/one,ggalancs/one,cloudweavers/one,ohamada/one,Terradue/one,spirit03/one,mattthias/one,tuxmea/one,unistra/one,OpenNebula/one,ohamada/one,juanmont/one,fasrc/one,goberle/one,baby-gnu/one,atodorov-storpool/one,hsanjuan/one,unistra/one,unistra/one,Terradue/one,dberzano/opennebula-torino,OpenNebula/one,juanmont/one,dberzano/opennebula-torino,juanmont/one,alvarosimon/one,goberle/one,dberzano/opennebula-torino,mattthias/one,juanmont/one,dberzano/opennebula-torino,alvarosimon/one,alvarosimon/one,cloudweavers/one,Terradue/one,goberle/one,OpenNebula/one,unistra/one,ohamada/one,atodorov-storpool/one,Terradue/one,cloudweavers/one