Renamed DataSource classes to use new SPK prefix.
Renamed Model classes to use new SPK prefix.
Renamed RDFParsers classes to use new SPK prefix.
Renamed SPARQLParser classes to use new SPK prefix.
Renamed QueryPlanner classes to use new SPK prefix.
Renamed PluginFramework classes to use new SPK prefix.
Renamed QueryEngine classes to use new SPK prefix.
Renamed Serializers classes to use new SPK prefix.
Renamed Trees classes to use new SPK prefix.
Renamed Utilities classes to use new SPK prefix.
Renamed Loggers classes to use new SPK prefix.