RFR: 8304478: Initial nroff manpage generation for JDK 22 [v2]

[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 The following unpublished changes will also be included in this update: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, to `javac.1`, 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.

David Holmes has updated the pull request incrementally with one additional commit since the last revision:

  Pick up javac and jshell changes

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/14462/files
  - new: https://git.openjdk.org/jdk/pull/14462/files/3efc518f..e8ff96d1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14462&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14462&range=00-01

  Stats: 74 lines in 2 files changed: 71 ins; 0 del; 3 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