RFR (S): 8212911: Unify and micro-optimize handling of non-in-collection set references in oop closures

[Kim Barrett]

> On Oct 30, 2018, at 6:37 AM, Thomas Schatzl <thomas.schatzl at oracle.com> wrote:
> 
> Hi,
> 
> ... aaaand I forgot to add the webrevs in the last email for
> reference:
> 
> http://cr.openjdk.java.net/~tschatzl/8212911/webrev.1_to_2 (diff)
> http://cr.openjdk.java.net/~tschatzl/8212911/webrev.2 (full)

And for the record, looks good.