RFR: 8281658: Add a security category to the java -XshowSettings option

[Sean Coffey]

New functionality in the -XshowSettings menu to display relevant information about JDK security configuration

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Commit messages:
 - minor edits, copyright, descriptions etc
 - Merge branch 'master' into 8281658-showsettings-security
 - Merge branch 'master' into 8281658-showsettings-security
 - 8281658

Changes: https://git.openjdk.org/jdk/pull/14394/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14394&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8281658
  Stats: 195 lines in 4 files changed: 177 ins; 10 del; 8 mod
  Patch: https://git.openjdk.org/jdk/pull/14394.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14394/head:pull/14394

PR: https://git.openjdk.org/jdk/pull/14394