RFR: 8290473: update Eclipse .classpath in apps, buildSrc [v12]

[Nir Lisker]

On Wed, 17 Aug 2022 22:22:02 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: review comments

Changes look good. The only remaining issue is that the project file under the root directory is named "rt" while in Eclipse it's named "jfx". I'm not sure where Gradle is taking the name from. The problem is that you can import the "rt" project and get a duplicate project.

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