[jdk11u-dev] RFR: 8211999: Window positioning bugs due to overlapping GraphicsDevice bounds (Windows/HiDPI)

[Martin Doerr]

Backport of JDK-8211999. Applies almost cleanly. I had to integrate hunks in WRobotPeer.java and Robot.java manually.

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Commit messages:
 - Backport be635258fa0b7c25441ab23ff9ec0f86655dc5ca

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/494/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=494&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8211999
  Stats: 1392 lines in 35 files changed: 963 ins; 275 del; 154 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/494.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/494/head:pull/494

PR: https://git.openjdk.java.net/jdk11u-dev/pull/494