RFR: 8289255: update Eclipse .classpath and other configuration files

[Kevin Rushforth]

On Tue, 28 Jun 2022 14:55:24 GMT, Andy Goryachev <duke at openjdk.org> wrote:

>> So given that this is unrelated, please revert this file.
>
> reverted.  we do want to fix it, right?

Yes, we can do it the next time we update gradle (which will be in the JavaFX 20 time frame).

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PR: https://git.openjdk.org/jfx/pull/804