RFR: 8289255: update Eclipse .classpath and other configuration files [v2]

[Kevin Rushforth]

On Tue, 5 Jul 2022 18:40:40 GMT, Andy Goryachev <duke at openjdk.org> wrote:

>> I marked line 9, which is `src/test/java`. This folder does not exist in the repo, but the classpath file defines it. It creates an error. Do you not get this error?
>
> there is nothing in javafx.swing/src/test/java (no tests??)
> git does not version directories, unlike some other VCs.  I wonder if we should either add a dummy file there, or may be create a test?

FWIW, the only test in `modules/javafx.swing/src/test/java` was removed by [JDK-8234110](https://bugs.openjdk.org/browse/JDK-8234110). While we could put in a dummy test class, the nature of the javafx.swing module is that unit tests are unlikely to be useful (which is why the one test that was there was moved to the system tests area with all the other Swing interop tests).

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