RFR: Joined the guide into a single file

[Stuart Marks]

On Wed, 14 Oct 2020 22:23:47 GMT, Stuart Marks <smarks at openjdk.org> wrote:

>> I have left a forwarding pointer in the old files in case anyone has a link to the guide somewhere. Not sure if this is
>> needed. Maybe it's better to just remove all the files directly?
>> I did remove jbslabels.md since that file hasn't been published on the web server yet.
>> 
>> I didn't make any changes in the content except for removing references to getSource.md, hgHelp.md, and tClone.md since
>> they are outdated and shouldn't be inlined in the guide. I also removed all TBD and sections with no content. Notes has
>> been added in the todo list in README.md for all sections and TBDs that was removed.
>
> Marked as reviewed by smarks (no project role).

FWIW I've reviewed these changes, though I'm not a Reviewer on the Guide project.

I see that most of the contents is preserved, though some placeholder sections that were never written (e.g., on TCK
testing) have been removed, which makes sense, as they probably are irrelevant at this point. I also note that a LOT of
the material covers Mercurial, which of course will need to be rewritten for the git/GitHub/Skara workflow.

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PR: https://git.openjdk.java.net/guide/pull/28