git: openjdk/jdk11u-dev: 8273831: PrintServiceLookup spawns 2 threads in the current classloader, getting orphaned

[Ben Taylor]

Changeset: 41179534
Author:    Ben Taylor <btaylor at openjdk.org>
Date:      2024-03-27 17:22:15 +0000
URL:       https://git.openjdk.org/jdk11u-dev/commit/4117953453635dbaea56add47a6fde5eb3f1258d

8273831: PrintServiceLookup spawns 2 threads in the current classloader, getting orphaned

Backport-of: 687567822a5380fb7d8c5b54ae548b2a5c848187

! src/java.desktop/unix/classes/sun/print/PrintServiceLookupProvider.java
! src/java.desktop/windows/classes/sun/print/PrintServiceLookupProvider.java
+ test/jdk/javax/print/PrintServiceLookup/FlushCustomClassLoader.java