RFR: 8318895: Deoptimization results in incorrect lightweight locking stack

[Roman Kennke]

See JBS issue for details.

I basically:
 - took the test-modification and turned it into its own test-case
 - added test runners for lightweight- and legacy-locking, so that we keep testing both, no matter what is the default
 - added Axels fix (mentioned in the JBS issue) with the modification to only inflate when exec_mode == Unpack_none, as explained by Richard.

Testing:
 - [x] EATests.java
 - [ ] tier1
 - [ ] tier2

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Commit messages:
 - 8318895: Deoptimization results in incorrect lightweight locking stack

Changes: https://git.openjdk.org/jdk/pull/16568/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16568&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8318895
  Stats: 99 lines in 2 files changed: 96 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/16568.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16568/head:pull/16568

PR: https://git.openjdk.org/jdk/pull/16568