RFR: jdk11 upstream merge jdk-11+22

[Roman Kennke]

Tag jdk-11+22 arrived, so let's merge it.

In order to tag precisely the exact same changeset, I had to do the
following procedure:

hg pull -r 9937ef7499dc jdk/jdk11 (the changeset tagged by the tag)
hg merge
hg commit -m"Merge"
hg tag shenandoah-jdk-11+22    (tag the same changeset plus Shenandoah)
hg pull -r 5bf28fee65c1     (the tagging changeset)
hg merge
hg commit -m"Merge"

Only this way can we tag the same changeset as upstream tag with our own
merged Shenandoah and also actually see the upstream tags.

We shall use this procedure for all future upstream merges.

Testing: tier3_gc_shenandoah

http://cr.openjdk.java.net/~rkennke/jdk11-upstream-merge-2018-07-12/outgoing.txt

Ok?

Roman