RFR: Add start on a section about logging [v2]

[David Holmes]

On Mon, 20 Dec 2021 09:24:20 GMT, Ludvig Janiuk <duke at openjdk.java.net> wrote:

>> It's hard to find information on how one should write logging code in Hotspot. This PR is only a first attempt at pointing the reader in the right direction, but a lot could be added in the future:
>>  * In which contexts can one not use unified logging?
>>  * How much should one log?
>>  * What other logging strategies are there?
>
> Ludvig Janiuk has updated the pull request incrementally with one additional commit since the last revision:
> 
>   cleanup

I think the Developer's Guide should be focused on process. It is a guide to enable people to make contributions. It cannot be a technical development guide for all different areas of the JDK - that would be completely impractical and would lead to factoring out the real "getting started" process oriented guide.

There is a place for a Hotspot Developer's Guide to replace the wiki materials, but that should be a completely separate document IMO.

David

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PR: https://git.openjdk.java.net/guide/pull/70