RFR: 8288984: Simplification in java.lang.Runtime::exit [v4]

[Ryan Ernst]

> This is a followup to simplify Shutdown.exit after the removal of
> finalizers (https://bugs.openjdk.org/browse/JDK-8198250). Once agreement
> on the approach has been reached in this PR, a CSR will be filed to
> propose the spec change to Runtime.exit.

Ryan Ernst has updated the pull request incrementally with one additional commit since the last revision:

  iter text

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Changes:
  - all: https://git.openjdk.org/jdk/pull/9351/files
  - new: https://git.openjdk.org/jdk/pull/9351/files/2253259c..fccd85ba

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=9351&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=9351&range=02-03

  Stats: 6 lines in 1 file changed: 0 ins; 1 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/9351.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9351/head:pull/9351

PR: https://git.openjdk.org/jdk/pull/9351