RFC: Pick up 11.0.8+1 to sh/jdk11

[Roland Westrelin]

> This is the src/hotspot subset of the merge:
>   https://cr.openjdk.java.net/~shade/shenandoah/merges/jdk11-11.0.8%2b1/webrev.01/
>
>>> Upstream had published 11.0.8+1, let's pick it up to sh/jdk11.
>>>
>>> The merge was simple, except one thing. I had to apply the missing Shenandoah hunk from 8231550 to
>>> unbreak the tests:
>>>   https://hg.openjdk.java.net/jdk/jdk/rev/bada0782842a
>
> ...for this, I resolved the conflict in src/hotspot/share/opto/loopnode.cpp by accepting the
> upstream side, and then applied a hunk in src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp
> cleanly. There were no other conflicts.
>
> Without doing the above, gc/shenandoah/compiler/CallMultipleCatchProjs.java fails.

That looks good to me.

Roland.