coleenp [Wed, 15 Mar 2017 10:25:37 -0400] rev 46329
8155672: Remove instanceKlassHandles and KlassHandles
Summary: Summary: Use unhandled pointers for Klass and InstanceKlass, remove handles with no implementation.
Reviewed-by: dholmes, lfoltan, vlivanov, sspitsyn
tschatzl [Wed, 15 Mar 2017 11:44:46 +0100] rev 46328
8168467: Use TaskEntry as task mark queue elements
Summary: Change the mark stack to use TaskEntry queue elements to improve type safety instead of casting around raw pointers.
Reviewed-by: kbarrett, sangheki