8139203: Consistent naming for klass type predicates
8138923: Remove oop coupling with InstanceKlass subclasses
Summary: Renamed oop_is_instance and friends, removed the functions in oop that dug down into InstanceKlass.
Reviewed-by: jrose, lfoltan, stefank

8129417: Oop iteration clean-up to remove oop_ms_follow_contents
Reviewed-by: pliden, ehelin

8080746: Refactor oop iteration macros to be more general
Reviewed-by: stefank, pliden

8075955: Replace the macro based implementation of oop_oop_iterate with a template based solution
Reviewed-by: brutisso, coleenp, kbarrett, sjohanss