RFR: 8265513: Openjfx graphics build broken (Eclipse)

[Jeanette Winzenburg]

Issue is usage of JMemoryBuddy in module graphics (SceneTest, added in [JDK-8264330](https://bugs.openjdk.java.net/browse/JDK-8264330). 

Fix is to add-exports in Eclipse .classpath in graphics (same as done for controls in fix of [JDK-8256184](https://bugs.openjdk.java.net/browse/JDK-8256184)

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Commit messages:
 - 8265513: Openjfx graphics build broken (Eclipse)

Changes: https://git.openjdk.java.net/jfx/pull/469/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jfx&pr=469&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8265513
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jfx/pull/469.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/469/head:pull/469

PR: https://git.openjdk.java.net/jfx/pull/469