RFR: 8349348: Refactor ClassLoaderDeadlock.sh and Deadlock.sh to run fully in java [v2]

[Mikhail Yankelevich]

> Refactor the following to run fully in java:
> test/java/security//Security/ClassLoaderDeadlock/ClassLoaderDeadlock.sh
> test/java/security//Security/ClassLoaderDeadlock/Deadlock.sh

Mikhail Yankelevich has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - typo
 - Merge branch 'master' into JDK-8349348
 - JDK-8349348: Refactor ClassLoaderDeadlock.sh and Deadlock.sh to run fully in java

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/23440/files
  - new: https://git.openjdk.org/jdk/pull/23440/files/0efada20..92de4d99

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=23440&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=23440&range=00-01

  Stats: 19197 lines in 692 files changed: 6541 ins; 8221 del; 4435 mod
  Patch: https://git.openjdk.org/jdk/pull/23440.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23440/head:pull/23440

PR: https://git.openjdk.org/jdk/pull/23440