RFR: 8256184: Openjfx build broken (Eclipse)

[Jeanette Winzenburg]

Issue was broken build in Eclipse after fix of [JDK-8244297](https://bugs.openjdk.java.net/browse/JDK-8244297): 

- the new memory test class requires jdk.management/java.management
- users of the test class (in controls) need access to its package

Changed .classpath files in base and controls to fix this.

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Commit messages:
 - 8256184: Openjfx build broken (Eclipse)

Changes: https://git.openjdk.java.net/jfx/pull/352/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jfx&pr=352&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8256184
  Stats: 3 lines in 2 files changed: 2 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jfx/pull/352.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/352/head:pull/352

PR: https://git.openjdk.java.net/jfx/pull/352