RFR: 7903410: JOL: Extend "estimate" to heap dumps and Lilliput [v3]

[Aleksey Shipilev]

> For Lilliput, we want an easy way to estimate the potential footprint improvements. "estimate" should be extended with Lilliput models, and "heapdump-estimate" should be added to read the data from heap dumps.

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

  Simulate current state and project target

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Changes:
  - all: https://git.openjdk.org/jol/pull/38/files
  - new: https://git.openjdk.org/jol/pull/38/files/00abed17..93280797

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jol&pr=38&range=02
 - incr: https://webrevs.openjdk.org/?repo=jol&pr=38&range=01-02

  Stats: 14 lines in 2 files changed: 5 ins; 0 del; 9 mod
  Patch: https://git.openjdk.org/jol/pull/38.diff
  Fetch: git fetch https://git.openjdk.org/jol pull/38/head:pull/38

PR: https://git.openjdk.org/jol/pull/38