RFR: 8289255: update Eclipse .classpath and other configuration files [v7]

[Andy Goryachev]

On Wed, 6 Jul 2022 21:38:36 GMT, Andy Goryachev <duke at openjdk.org> wrote:

>> summary of changes:
>> - fixed .classpath files
>> - set UTF-8 encoding in the eclipse project config files
>
> Andy Goryachev has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8289255: removed 3DViewer test folders from .classpath

I did have samples project open - that would explain my changes in 3DViewer and Ensemble8 files.
Let me see what it would take to create individual projects for toys and such.
I will change the nature of the apps .project to gradle.

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