RFR: 8231601: Update CONTRIBUTING.md to clarify process for contributing features plus Skara changes [v8]

[Kevin Rushforth]

On Fri, 17 Dec 2021 14:15:32 GMT, Nir Lisker <nlisker at openjdk.org> wrote:

>> Kevin Rushforth has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Minor updates
>
> CONTRIBUTING.md line 204:
> 
>> 202: section of the Code Review Policies doc, we also need a [CSR](https://wiki.openjdk.java.net/display/csr/Main), which documents the API change and its approval.
>> 203: The CSR can be reviewed in parallel. Changes in the API that arise during the review need to be reflected in the CSR, meaning
>> 204: that the final review / approval of the CSR usually happens late in the review cycle.
> 
> I would advise contributors to not deal with the CSR until the review is almost done. It just duplicates the places that you need to update. I'm saying this from personal experience :)

Good idea.

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PR: https://git.openjdk.java.net/jfx/pull/303