RFR: 8219586: CodeHeap State Analytics processes dead nmethods

[Lutz Schmidt]

This change was already fully reviewed before the transition Mercurial to Git happened.
Reviewed-by: thartmann (TobiHartmann), eosterlund (Git name unknown)

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Commit messages:
 - Backout JDK-8250635
 - Merge branch 'JDK-8250635' into JDK-8219586
 - JDK-8250635 tranferred from Mercurial
 - 8219586: CodeHeap State Analytics processes dead nmethods

Changes: https://git.openjdk.java.net/jdk/pull/325/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=325&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8219586
  Stats: 266 lines in 8 files changed: 111 ins; 53 del; 102 mod
  Patch: https://git.openjdk.java.net/jdk/pull/325.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/325/head:pull/325

PR: https://git.openjdk.java.net/jdk/pull/325