RFR: CODETOOLS-7903501: JOL: Reformat heapdump-estimates output [v3]

Mon Jun 26 11:22:30 UTC 2023

> Heapdump-estimates is a very useful tool to select a proper JVM mode, based on heap dump of live objects. We can make it much more human-readable.

Aleksey Shipilev has updated the pull request incrementally with two additional commits since the last revision:

 - Code touchups
 - Revert unrelated changes

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

Changes:
  - all: https://git.openjdk.org/jol/pull/42/files
  - new: https://git.openjdk.org/jol/pull/42/files/8b9a8cf2..0ae38317

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jol&pr=42&range=02
 - incr: https://webrevs.openjdk.org/?repo=jol&pr=42&range=01-02

  Stats: 14 lines in 3 files changed: 4 ins; 9 del; 1 mod
  Patch: https://git.openjdk.org/jol/pull/42.diff
  Fetch: git fetch https://git.openjdk.org/jol.git pull/42/head:pull/42

PR: https://git.openjdk.org/jol/pull/42