[jdk17u-dev] RFR: 8273831: PrintServiceLookup spawns 2 threads in the current classloader, getting orphaned [v2]

[Sergey Bylokhov]

> Hi all,
> 
> This pull request contains a backport of commit [68756782](https://github.com/openjdk/jdk/commit/687567822a5380fb7d8c5b54ae548b2a5c848187) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
> 
> The commit being backported was authored by Sergey Bylokhov on 30 Oct 2021 and was reviewed by Alexey Ivanov.
> 
> Thanks!

Sergey Bylokhov 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 'openjdk:master' into mrserb-backport-68756782
 - Backport 687567822a5380fb7d8c5b54ae548b2a5c848187

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

Changes:
  - all: https://git.openjdk.org/jdk17u-dev/pull/1625/files
  - new: https://git.openjdk.org/jdk17u-dev/pull/1625/files/0bd4c38c..ea6da0d0

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1625&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1625&range=00-01

  Stats: 7317 lines in 144 files changed: 5492 ins; 1054 del; 771 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1625.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1625/head:pull/1625

PR: https://git.openjdk.org/jdk17u-dev/pull/1625