[jfx17u] RFR: 8273280: Update README.md and CONTRIBUTING.md for jfx17u

Tue Sep 14 12:01:10 UTC 2021

On Sat, 11 Sep 2021 13:25:35 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> This PR updates [`README.md`](https://github.com/openjdk/jfx17u/blob/3082a845253dd00d46d36500abc42464459e59ed/README.md) and [`CONTRIBUTING.md`](https://github.com/openjdk/jfx17u/blob/3082a845253dd00d46d36500abc42464459e59ed/CONTRIBUTING.md) to be suitable for update releases. The two files were copied from jfx11u, with the only changes being to replace "11" with "17" in the two files.

CONTRIBUTING.md line 14:

> 12: ```
> 13: 
> 14: where `LONG-COMMIT-HASH` is the long (40 char) commit hash of the fix as found in the main jfx repo. The Skara tooling will then note that it is a backport, and replace the title with the correct issue title.

Should the next parts of the process be explained as well (e.g. optional review if no clean patch, merging?)

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PR: https://git.openjdk.java.net/jfx17u/pull/1