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

[Andy Goryachev]

> 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

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

Changes:
  - all: https://git.openjdk.org/jfx/pull/804/files
  - new: https://git.openjdk.org/jfx/pull/804/files/3a5e2451..7221e596

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=804&range=06
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=804&range=05-06

  Stats: 2 lines in 1 file changed: 0 ins; 2 del; 0 mod
  Patch: https://git.openjdk.org/jfx/pull/804.diff
  Fetch: git fetch https://git.openjdk.org/jfx pull/804/head:pull/804

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