Reviewed-by: jcoomes

8047812: Ensure ClassLoaderDataGraph::classes_unloading_do only delivers klasses from CLDs with non-reclaimed class loader oops
Reviewed-by: coleenp, sspitsyn, ehelin

Summary: Initialize host_klass while parsing the class with the other initializations.
Reviewed-by: sspitsyn, stefank

Reviewed-by: jcoomes

Summary: Moved ntive monitor monitoring flags to experimental
Reviewed-by: acorn, hseigel, mschoene