RFR: CODETOOLS-7903521: JOL: heapdumpstats should print array/class names properly [v2]

[Aleksey Shipilev]

> Current "heapdumpstats" prints "Object[]" for all array types. It should print the actual type. Also, the printouts for the class names should be in more human-readable notation, not the JVM binary names.

Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:

  Handle more special cases for extra safety

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Changes:
  - all: https://git.openjdk.org/jol/pull/45/files
  - new: https://git.openjdk.org/jol/pull/45/files/ed1d7d5d..0bdbffde

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jol&pr=45&range=01
 - incr: https://webrevs.openjdk.org/?repo=jol&pr=45&range=00-01

  Stats: 13 lines in 2 files changed: 12 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jol/pull/45.diff
  Fetch: git fetch https://git.openjdk.org/jol.git pull/45/head:pull/45

PR: https://git.openjdk.org/jol/pull/45