RFR: 8277459: Add jwebserver tool [v6]

[Magnus Ihse Bursie]

On Mon, 29 Nov 2021 17:00:24 GMT, Julia Boes <jboes at openjdk.org> wrote:

>> This change introduces jwebserver, a dedicated JDK tool for the Simple Web Server. 
>> 
>> A description is provided in a follow-up comment.
>
> Julia Boes has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 16 commits:
> 
>  - Merge branch 'master' into jwebserver
>  - update comment about exit code
>  - add toolGuide tag to SimpleFileServer class-level documentation
>  - Merge branch 'master' into jwebserver
>  - fix whitespace error, add missing code tag
>  - address PR comments:
>    * update module and package summary
>    * add -version / --version option to usage
>    * fix markdown formatting
>  - update module summary
>  - Merge branch 'master' into jwebserver
>  - add version option, consolidate tests, update module and package level doc
>  - drop "tool" in man page
>  - ... and 6 more: https://git.openjdk.java.net/jdk/compare/825e633e...936c3d4a

Build changes look good

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Marked as reviewed by ihse (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/6497