RFR: 8253064: monitor list simplifications and getting rid of TSM [v7]

[Daniel D.Daugherty]

> Changes from @fisk and @dcubed-ojdk to:
> 
> - simplify ObjectMonitor list management
> - get rid of Type-Stable Memory (TSM)
> 
> This change has been tested with Mach5 Tier[1-3],4,5,6,7,8; no new regressions.
> Aurora Perf runs have also been done (DaCapo-h2, Quick Startup/Footprint,
> SPECjbb2015-Tuned-G1, SPECjbb2015-Tuned-ParGC, Volano)
>   - a few minor regressions (<= -0.24%)
>   - Volano is 6.8% better
> 
> Eric C. has also done promotion perf runs on these bits and says "the results look fine".

Daniel D. Daugherty has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains ten commits:

 - @dholmes-ora, @robehn and @coleenp CR - a few more minor tweaks.
 - Merge branch 'master' into JDK-8253064
 - resolve more robehn and coleenp comments.
 - coleenp CR - refactor common ThreadBlockInVM code block into ObjectSynchronizer::chk_for_block_req().
 - dholmes-ora - convert inner while loop to do-while loop in unlink_deflated().
 - Resolve more @dholmes-ora comments with help from @fisk.
 - Resolve most of dholmes-ora comments.
 - 8253064.v00.part2
 - 8253064.v00.part1

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Changes: https://git.openjdk.java.net/jdk/pull/642/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=642&range=06
  Stats: 2506 lines in 25 files changed: 602 ins; 1697 del; 207 mod
  Patch: https://git.openjdk.java.net/jdk/pull/642.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/642/head:pull/642

PR: https://git.openjdk.java.net/jdk/pull/642