RFR: 8318895: Deoptimization results in incorrect lightweight locking stack [v2]

[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
>  - [x] tier1
>  - [ ] tier2

Roman Kennke has updated the pull request incrementally with one additional commit since the last revision:

  Add @reinrich's test-case

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/16568/files
  - new: https://git.openjdk.org/jdk/pull/16568/files/d9370df6..966d0a3e

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16568&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16568&range=00-01

  Stats: 58 lines in 1 file changed: 58 ins; 0 del; 0 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