RFR: Upstream merge 2018-06-05

[Roman Kennke]

Moving just a little bit closer to jdk/jdk tip. This time up to:


changeset:   50311:bd0a95bec96b
tag:         tip
user:        redestad
date:        Fri May 04 09:29:14 2018 +0200
summary:     8187123: (reflect) Class#getCanonicalName and
Class#getSimpleName is a part of performance issue


Next one up is conditional GC compilation, which I want to take as
single step again.

The merge itself was almost conflict-free and merging conflicts have
been trivial exercises.

Testing: tier3_gc_shenandoah ok

List of changes:

http://cr.openjdk.java.net/~rkennke/upstream-merge-2018-06-05/outgoing.txt

Ok to push?

Roman