RFR: 8341544: Restore fence() in Mutex

[Anton Artemov]

Added a fence in the mutex code in order to make the critical section provided by the mutex follow the roach-motel semantics. 

No significant performance impact observed in an extending testing.

Tested in tiers 1-3.

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Commit messages:
 - 8341544: Addressed reviwers comments.
 - 8341544: Removed fences in handshake, addressed comment style
 - 8341544: Added extended comment, removed fence in HandshakeState:process_by_self
 - Merge remote-tracking branch 'origin/master' into JDK-8341544
 - 8341544: Refactored a call to OrderAccess::fence() and added a comment.
 - 8341544: Does Mutex need to also add a fence()

Changes: https://git.openjdk.org/jdk/pull/25033/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25033&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341544
  Stats: 13 lines in 2 files changed: 13 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/25033.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25033/head:pull/25033

PR: https://git.openjdk.org/jdk/pull/25033