[jdk8u-dev] RFR: 8242330: Arrays should be cloned in several JAAS Callback classes

[Yuri Nesterenko]

For 8u this backport does require a minimal update of the test preamble,  some copyright date changes and paragraph symbols in comments. 
CSR copy is filed as [JDK-8317297](https://bugs.openjdk.org/browse/JDK-8317297).

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

Commit messages:
 - Backport 8cd9241448f818b5e307d408ac4395b518791096

Changes: https://git.openjdk.org/jdk8u-dev/pull/380/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=380&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8242330
  Stats: 132 lines in 3 files changed: 107 ins; 0 del; 25 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/380.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/380/head:pull/380

PR: https://git.openjdk.org/jdk8u-dev/pull/380