RFR: JDK-8286666: JEP 429: Implementation of Scoped Values (Incubator) [v30]

[Andrew Haley]

> JEP 429 implementation.

Andrew Haley has updated the pull request incrementally with five additional commits since the last revision:

 - Merge branch 'JDK-8286666' of https://github.com/theRealAph/jdk into JDK-8286666
 - Update src/jdk.incubator.concurrent/share/classes/jdk/incubator/concurrent/ScopedValue.java
   
   Co-authored-by: Paul Sandoz <paul.d.sandoz at googlemail.com>
 - Update src/jdk.incubator.concurrent/share/classes/jdk/incubator/concurrent/ScopedValue.java
   
   Co-authored-by: Paul Sandoz <paul.d.sandoz at googlemail.com>
 - Reviewer feedback
 - Update src/jdk.incubator.concurrent/share/classes/jdk/incubator/concurrent/ScopedValue.java
   
   Co-authored-by: Paul Sandoz <paul.d.sandoz at googlemail.com>

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/10952/files
  - new: https://git.openjdk.org/jdk/pull/10952/files/c10a5d79..15db2a30

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=10952&range=29
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=10952&range=28-29

  Stats: 4 lines in 1 file changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/10952.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10952/head:pull/10952

PR: https://git.openjdk.org/jdk/pull/10952