RFR: 7242: Adding new JDK Events to core API [v2]

[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 incrementally with one additional commit since the last revision:

  Fixing formatting errors in core

-------------

Changes:
  - all: https://git.openjdk.java.net/jmc/pull/245/files
  - new: https://git.openjdk.java.net/jmc/pull/245/files/fda5af22..600d38cf

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jmc&pr=245&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jmc&pr=245&range=00-01

  Stats: 4 lines in 2 files changed: 1 ins; 0 del; 3 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