Stepped version of the RDF library to 2.9.0
Stepped version of the RDF library to 2.9.0

edechter/swipl-devel,koryonik/swipl-devel,koryonik/swipl-devel,jn7163/swipl-devel,koryonik/swipl-devel,mndrix/swipl-devel,jn7163/swipl-devel,jn7163/swipl-devel,edechter/swipl-devel,jn7163/swipl-devel,edechter/swipl-devel,mndrix/swipl-devel,koryonik/swipl-devel,edechter/swipl-devel,mndrix/swipl-devel,mndrix/swipl-devel,mndrix/swipl-devel,edechter/swipl-devel,koryonik/swipl-devel,jn7163/swipl-devel