RFR: CODETOOLS-7903018: jcstress: Add more Read-Modify-Write examples [v3]

[Aleksey Shipilev]

> These are long time coming.

Aleksey Shipilev has updated the pull request incrementally with two additional commits since the last revision:

 - More work
 - Even more RMW work

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

Changes:
  - all: https://git.openjdk.java.net/jcstress/pull/92/files
  - new: https://git.openjdk.java.net/jcstress/pull/92/files/8e321f30..b595fccd

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jcstress&pr=92&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jcstress&pr=92&range=01-02

  Stats: 657 lines in 7 files changed: 328 ins; 319 del; 10 mod
  Patch: https://git.openjdk.java.net/jcstress/pull/92.diff
  Fetch: git fetch https://git.openjdk.java.net/jcstress pull/92/head:pull/92

PR: https://git.openjdk.java.net/jcstress/pull/92