RFR: 8241141: Restructure humongous object allocation in G1

[Kim Barrett]

> On Apr 7, 2020, at 10:02 AM, Stefan Johansson <stefan.johansson at oracle.com> wrote:
> 
> New webrevs incorporating the new suggested search from Kim:
> Full: http://cr.openjdk.java.net/~sjohanss/8241141/02/
> Inc: http://cr.openjdk.java.net/~sjohanss/8241141/01-02/

Looks good.