[jdk17u-dev] RFR: 8286312: Stop mixing signed and unsigned types in bit operations [v2]

[Aleksey Shipilev]

> Clean backport to improve Atomics reliability in JDK 17u. The fix accrued no bug tail for 1.5 years.
> 
> Additional testing:
>  - [x] macos-aarch64-server-fastdebug, `Atomic` gtests

Aleksey Shipilev has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge branch 'master' into JDK-8286312-atomics-cleanup-signed-unsigned
 - Backport 39f4434f44d46548917926c7a802b046197bbe33

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

Changes:
  - all: https://git.openjdk.org/jdk17u-dev/pull/2060/files
  - new: https://git.openjdk.org/jdk17u-dev/pull/2060/files/4c3dd557..ed0e708b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2060&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2060&range=00-01

  Stats: 8255 lines in 173 files changed: 4071 ins; 2177 del; 2007 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2060.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2060/head:pull/2060

PR: https://git.openjdk.org/jdk17u-dev/pull/2060