Upstream merge jdk/jdk12 > sh/jdk12 to jdk-12+29

[Aleksey Shipilev]

On 1/25/19 5:51 PM, Roman Kennke wrote:
> See $SUBJECT.
> 
> http://cr.openjdk.java.net/~rkennke/upstream-jdk12-merge-2019-01-25/changes.txt
> 
> - 8217467: Access barriers are missing in C2 intrinsic for Base64
> 
> Merged trivially
> 
> Testing: hotspot_gc_shenandoah (ongoing)
> 
> Ok?

OK!

-Aleksey