[jdk11u-dev] RFR: 8232243: Wrong caret position in JTextPane on Windows with a screen resolution > 100%

[Martin Doerr]

Clean backport of JDK-8232243.

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Commit messages:
 - Backport ddb1d7a16382e0e10b34577e7e8fa9a48b7bb20c

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/168/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=168&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8232243
  Stats: 138 lines in 3 files changed: 136 ins; 1 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/168.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/168/head:pull/168

PR: https://git.openjdk.java.net/jdk11u-dev/pull/168