RFR: Addition of a causes link type [v9]

[Roger Calnan]

On Mon, 27 Jan 2025 16:27:18 GMT, Roger Calnan <duke at openjdk.org> wrote:

>> There is a proposal for the addition of a causes/caused by link type.  Tied into that there is now a separate section which covers the main link types that we use
>
> Roger Calnan has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - Update src/guide/jbs-jdk-bug-system.md
>    
>    Co-authored-by: Alexey Ivanov <alexey.ivanov at oracle.com>
>  - Update src/guide/backporting.md
>    
>    Co-authored-by: Alexey Ivanov <alexey.ivanov at oracle.com>

Jesper, as discussed I moved the order of the paragraphs in "Backporting multiple related changes"

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PR Comment: https://git.openjdk.org/guide/pull/139#issuecomment-2616699138