[jdk11u-dev] RFR: 8251377: [macos11] JTabbedPane selected tab text is barely legible

[Martin Doerr]

Backport of JDK-8251377. Doesn't apply cleanly because Mac OS version check from JDK-8230869 is not in 11u. I just included the introduction of `isCatalinaOrAbove` and `isBigSurOrAbove` from the latter. Rest applies cleanly.

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

Commit messages:
 - Backport 3f67afd3a8c642f33ca58a9881dff4c81f83e821

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/198/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=198&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8251377
  Stats: 20 lines in 5 files changed: 18 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/198.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/198/head:pull/198

PR: https://git.openjdk.java.net/jdk11u-dev/pull/198