[11] Pick up jdk-11.0.9+2 to sh/jdk11

[Roman Kennke]

JFR leftovers are ok, and infact may be harmful. Shenandoah definitions are
in separate metadata-shenandoah.xml file now.

Zhengyu Gu <zgu at redhat.com> schrieb am Mi., 5. Aug. 2020, 14:47:

> Okay.
>
> -Zhengyu
>
> On 8/5/20 2:44 AM, Aleksey Shipilev wrote:
> > Upstream had published jdk-11.0.9+2. This brings the huge Shenandoah
> integration.
> >
> > The merge is tedious, but simple. The leftover differences against
> upstream are:
> >
> https://cr.openjdk.java.net/~shade/shenandoah/merges/jdk11-11.0.9%2b2-leftovers/webrev.01/
> >
> > Testing: hotspot_gc_shenandoah {fastdebug,release}
> >
>
>