RFR: 8215916: The failure reason of an optional JAAS LoginModule is not logged [v14]

[Jayashree Huttanagoudar]

> Could you please review the changes?
> This patch is to address : https://bugs.openjdk.org/browse/JDK-8215916?jql=labels%20%3D%20starter-bug

Jayashree Huttanagoudar has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 14 commits:

 - Merge branch 'master' into JDK-8215916
 - Address errors by bot to the previous commit
 - Address review comment
 - Address whitespace error by jcheck
 - Address whitespace error by jcheck
 - Address review comment to add call stacktrace changes to OPTIONAL login module when debug is on
 - Address review comment to revert back the previous changes in the test case
 - Address review comment for cross-platform in the test case
 - Address review comment for test case
 - Added test case using {Unix,NT}LoginModule
 - ... and 4 more: https://git.openjdk.org/jdk/compare/f2773f64...93a22f7a

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Changes: https://git.openjdk.org/jdk/pull/9159/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9159&range=13
  Stats: 93 lines in 2 files changed: 91 ins; 1 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/9159.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9159/head:pull/9159

PR: https://git.openjdk.org/jdk/pull/9159