RFR: CODETOOLS-7903038: jcstress: More Coherence examples

[Aleksey Shipilev]

We need to show that coherence is key for RMW operations and also that IRIW only makes sense with different locations.

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Commit messages:
 - Shift AdvancedJMM samples
 - Shift RMW examples
 - Updates
 - CAS-related test
 - MCA coherence example

Changes: https://git.openjdk.java.net/jcstress/pull/97/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jcstress&pr=97&range=00
  Issue: https://bugs.openjdk.java.net/browse/CODETOOLS-7903038
  Stats: 256 lines in 18 files changed: 218 ins; 0 del; 38 mod
  Patch: https://git.openjdk.java.net/jcstress/pull/97.diff
  Fetch: git fetch https://git.openjdk.java.net/jcstress pull/97/head:pull/97

PR: https://git.openjdk.java.net/jcstress/pull/97