[master] RFR: 8300733: [Lilliput] Enable fast-locking for Lilliput [v2]

[Roman Kennke]

> Fast-locking provides many advantages for Lilliput. Most importantly, it greatly simplifies the access of the mark word: we no longer need to handle the case of stack-locking which has been racy and complicated.
> 
> This change enables fast-locking, but doesn't yet touch any of the improvements that it provides (simpler loading of Klass*, etc).
> 
> Testing:
>  - [x] tier1
>  - [x] tier2

Roman Kennke 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 two additional commits since the last revision:

 - Merge branch 'master' into JDK-8300733
 - [Lilliput] Enable fast-locking for Lilliput

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

Changes:
  - all: https://git.openjdk.org/lilliput/pull/64/files
  - new: https://git.openjdk.org/lilliput/pull/64/files/edffb491..4ced8f55

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=lilliput&pr=64&range=01
 - incr: https://webrevs.openjdk.org/?repo=lilliput&pr=64&range=00-01

  Stats: 1786 lines in 3 files changed: 3 ins; 1782 del; 1 mod
  Patch: https://git.openjdk.org/lilliput/pull/64.diff
  Fetch: git fetch https://git.openjdk.org/lilliput pull/64/head:pull/64

PR: https://git.openjdk.org/lilliput/pull/64