RFR: JDK-8286666: JEP 429: Implementation of Scoped Values (Incubator) [v17]

[Andrew Haley]

> JEP 429 implementation.

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

 - Merge branch 'JDK-8286666' of https://github.com/theRealAph/jdk into JDK-8286666
 - Fix bad merge.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/10952/files
  - new: https://git.openjdk.org/jdk/pull/10952/files/86ce5bbd..04320c7b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=10952&range=16
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=10952&range=15-16

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 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