Core.Util.NamedSPILoader bug fix: Added logic to check for a default constructor before attempting to instantiate (previously removed from Core.Util.NamedSPIIterator to fix another bug).
Core.Util.NamedSPILoader bug fix: Added logic to check for a default constructor before attempting to instantiate (previously removed from Core.Util.NamedSPIIterator to fix another bug).

NightOwl888/lucenenet,NightOwl888/lucenenet,sisve/lucenenet,laimis/lucenenet,jeme/lucenenet,apache/lucenenet,sisve/lucenenet,NightOwl888/lucenenet,laimis/lucenenet,jeme/lucenenet,jeme/lucenenet,apache/lucenenet,NightOwl888/lucenenet,apache/lucenenet,apache/lucenenet,jeme/lucenenet