RFR: 8281658: Add a security category to the java -XshowSettings option [v6]

[Sean Coffey]

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

Sean Coffey has updated the pull request incrementally with two additional commits since the last revision:

 - restore more informative help message
 - Split long properties for ; also

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Changes:
  - all: https://git.openjdk.org/jdk/pull/14394/files
  - new: https://git.openjdk.org/jdk/pull/14394/files/91dc41f3..8abd2fe9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14394&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14394&range=04-05

  Stats: 25 lines in 1 file changed: 16 ins; 6 del; 3 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