RFR: JDK-8299672: Enhance HeapDump JFR event [v4]

[Matthias Baesken]

> Enhance the JFR Event HeapDump  with the additional interesting fields, compression and overwrite.
> Add some UL logging in case the heap dump writing failed .

Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:

  Adjust Copyright year in metadata.xml

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/11864/files
  - new: https://git.openjdk.org/jdk/pull/11864/files/76fc3a9c..f5c80e1a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=11864&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=11864&range=02-03

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/11864.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11864/head:pull/11864

PR: https://git.openjdk.org/jdk/pull/11864