Fix scons tests for xml-rpc-c with gcc 4.6
Fix scons tests for xml-rpc-c with gcc 4.6

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