RFR: 8306591: SA and hotspot generate different hprof records for GC roots [v3]

[Yasumasa Suenaga]

> We can extract heapdump from coredump via `jhsdb jmap --binaryheap`. However GC roots for system classes (`HPROF_GC_ROOT_STICKY_CLASS`) are not available i it even though heapdump from HotSpot contains.
> 
> SA should generate `HPROF_GC_ROOT_STICKY_CLASS` into heapdump.

Yasumasa Suenaga has updated the pull request incrementally with one additional commit since the last revision:

  Update src/hotspot/share/runtime/vmStructs.cpp
  
  Co-authored-by: David Holmes <62092539+dholmes-ora at users.noreply.github.com>

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Changes:
  - all: https://git.openjdk.org/jdk/pull/29781/files
  - new: https://git.openjdk.org/jdk/pull/29781/files/1bab6ba2..83dd26d8

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=29781&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=29781&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/29781.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29781/head:pull/29781

PR: https://git.openjdk.org/jdk/pull/29781