RFR: 8307806: Rename Atomic::fetch_and_add and friends [v2]

[Kim Barrett]

> Please review this renaming of Atomic::fetch_and_add and friends to be
> consistent with the naming convention recently chosen for atomic bitops.  That
> is, make the following name changes for class Atomic and it's implementation:
> 
> - fetch_and_add => fetch_then_add
> - add_and_fetch => add_then_fetch
> 
> Testing:
> mach5 tier1-3
> GHA testing

Kim Barrett has updated the pull request incrementally with one additional commit since the last revision:

  revert accidental Red Hat copyright change

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/13896/files
  - new: https://git.openjdk.org/jdk/pull/13896/files/a5da705e..f527511b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13896&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13896&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/13896.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13896/head:pull/13896

PR: https://git.openjdk.org/jdk/pull/13896