RFR: 8344318: Enhance configure help for enabling/disabling single JVM features

[Matthias Baesken]

The current help of OpenJDK configure could be enhanced a bit regarding enabling/disabling JVM features.

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Commit messages:
 - JDK-8344318

Changes: https://git.openjdk.org/jdk/pull/22231/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22231&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8344318
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/22231.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22231/head:pull/22231

PR: https://git.openjdk.org/jdk/pull/22231