RFR: 8187490: HotSpotRuntimeMBean should be moved to Graal management module

[mandy chung]

On 4/13/18 2:24 AM, Doug Simon wrote:
> Please review this change that removes the existing Graal service provider for hooking into the Platform MBean Server and makes jdk.internal.vm.compiler.management an upgradeable module.
>
> Please refer to https://bugs.openjdk.java.net/browse/JDK-8187490?focusedCommentId=14170942&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14170942 for discussion on the latter point.
>
> The Graal changes that dynamically register an MBean for accessing Graal will be part of a subsequent Graal update.
>
> http://cr.openjdk.java.net/~dnsimon/8187490/
>
>

This looks okay.   jdk.internal.vm.compiler.management will become empty 
until the next Graal update and I guess this makes it easier to make 
Graal change in the upstream project.   This is fine with me.

Mandy