DB_op: rename statement_set -> query_set
DB_op: rename statement_set -> query_set

ozFri/rhizi,ozFri/rhizi,tlevine/rhizi,tlevine/rhizi,tlevine/rhizi,Rhizi/rhizi,Rhizi/rhizi,cben/rhizi,shlomif/rhizi,yuvadm/rhizi,tlevine/rhizi,cben/rhizi,shlomif/rhizi,yuvadm/rhizi,shlomif/rhizi,yuvadm/rhizi,ozFri/rhizi,shlomif/rhizi,cben/rhizi,yuvadm/rhizi,Rhizi/rhizi,Rhizi/rhizi,cben/rhizi,ozFri/rhizi