RFR: Upstream merge 2018-06-11

[Roman Kennke]

Let's do another merge up to:

changeset:   50858:6dfe5ae92fa8
user:        mbaesken
date:        Fri Jun 08 14:14:44 2018 +0200
summary:     8204598: add more thread-related system settings info to
hs_error file on Linux


We get, among other stuff, a P1 bugfix:

8204479: Bitwise AND on byte value sometimes produces wrong result

and GC interface:

8203172: Primitive heap access for interpreter BarrierSetAssembler/aarch64


Complete list:

http://cr.openjdk.java.net/~rkennke/upstream-merge-2018-06-11/outgoing.txt

Testing: tier3_gc_shenandoah ongoing/complete before push

Ok?

Roman