RFR: 8281658: Add a security category to the java -XshowSettings option [v2]

[Sean Coffey]

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

Sean Coffey 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 six additional commits since the last revision:

 - Merge branch 'master' into 8281658-showsettings-security
 - Incorporate feedback to date
 - minor edits, copyright, descriptions etc
 - Merge branch 'master' into 8281658-showsettings-security
 - Merge branch 'master' into 8281658-showsettings-security
 - 8281658

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Changes:
  - all: https://git.openjdk.org/jdk/pull/14394/files
  - new: https://git.openjdk.org/jdk/pull/14394/files/a54a0921..c60a4ed4

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14394&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14394&range=00-01

  Stats: 51921 lines in 852 files changed: 41802 ins; 7035 del; 3084 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