RFR: 7242: Adding new JDK Events to core API [v4]

[Suchita Chaturvedi]

> This PR will address these missing events and add them to core API.
> 
> jdk.ThreadCPULoad
> 
> jdk.NativeMethodSample
> 
> jdk.ThreadStart
> 
> jdk.ThreadEnd

Suchita Chaturvedi has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains five commits:

 - Merge master
 - Added values in message properties file
 - Fixing formatting errors in core
 - Fixed spotbugs errors
 - 7242: Adding new JDK Events to core API

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Changes: https://git.openjdk.java.net/jmc/pull/245/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jmc&pr=245&range=03
  Stats: 27 lines in 5 files changed: 25 ins; 1 del; 1 mod
  Patch: https://git.openjdk.java.net/jmc/pull/245.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/245/head:pull/245

PR: https://git.openjdk.java.net/jmc/pull/245