RFR: 8290473: update Eclipse .classpath in apps, buildSrc [v9]

[Jeanette Winzenburg]

On Fri, 12 Aug 2022 23:23:46 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

>> The goal of this change is to make sure jfx repo can be imported as a gradle project in eclipse and all nested projects in the workspace compile with no errors.
>> 
>> - updated .classpath entries in apps/
>> - added utf-8 prefs in .settings/
>
> Andy Goryachev has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8290473: removed empty src sir

no review, just a confirmation for part of this fix: with the change of .classpath in graphics (essentially a reversion of [JDK-8289255](https://bugs.openjdk.org/browse/JDK-8289255)) , applications in Eclipse projects that depend on the project graphics are now running again without errors

-------------

PR: https://git.openjdk.org/jfx/pull/858