RFR: 8304478: Initial nroff manpage generation for JDK 22

[David Holmes]

Updated the version to 22-ea and year to 2024.

The following unpublished changes will also be included in this update:
- [JDK-8290626](https://bugs.openjdk.org/browse/JDK-8290626): keytool manpage contains a special character
- [JDK-8303928](https://bugs.openjdk.org/browse/JDK-8303928): Update jarsigner man page after [JDK-8303410](https://bugs.openjdk.org/browse/JDK-8303410)
- [JDK-8301207](https://bugs.openjdk.org/browse/JDK-8301207): (jdeps) Deprecate jdeps -profile option

The following changes were never applied to the closed sources and are "lost" by this update. These changes will need to be re-applied directly in JDK 21 and JDK 22:
- [JDK-8296656](https://bugs.openjdk.org/browse/JDK-8296656): java.lang.NoClassDefFoundError exception on running fully legitimate code
- [JDK-8015831](https://bugs.openjdk.org/browse/JDK-8015831): Add lint check for calling overridable methods from a constructor

Thanks.

-------------

Commit messages:
 - 8304478: Initial nroff manpage generation for JDK 22

Changes: https://git.openjdk.org/jdk/pull/14462/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14462&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8304478
  Stats: 140 lines in 28 files changed: 1 ins; 105 del; 34 mod
  Patch: https://git.openjdk.org/jdk/pull/14462.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14462/head:pull/14462

PR: https://git.openjdk.org/jdk/pull/14462