RFR: CODETOOLS-7903176: Move LJV inside JOL [v5]

[Ivan Ponomarev]

> This moves https://github.com/atp-mipt/ljv project inside JOL in order for LJV to get access to internal JOL's APIs.
> 
> See blogposts about LJV [in Russian](https://habr.com/ru/post/599045/) /  [in English](https://dzone.com/articles/what-can-we-learn-from-java-data-structures-visual).

Ivan Ponomarev has updated the pull request incrementally with two additional commits since the last revision:

 - Merge pull request #7 from atp-mipt/jchekProblems
   
   jcheck Whitespace error fix
 - jcheck Whitespace error fix

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

Changes:
  - all: https://git.openjdk.org/jol/pull/24/files
  - new: https://git.openjdk.org/jol/pull/24/files/00a0ac71..4d44d66e

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jol&pr=24&range=04
 - incr: https://webrevs.openjdk.org/?repo=jol&pr=24&range=03-04

  Stats: 2 lines in 1 file changed: 0 ins; 2 del; 0 mod
  Patch: https://git.openjdk.org/jol/pull/24.diff
  Fetch: git fetch https://git.openjdk.org/jol pull/24/head:pull/24

PR: https://git.openjdk.org/jol/pull/24