Backport ICU update from jfx mainline to jfx11u. The backport was clean except for a minor diff in the surrounding context in `build.gradle`. I ran a sanity test on Windows (I'll test on other two platforms before integrating).
------------- Commit messages: - 8260245: Update ICU4C to version 68.2 Changes: https://git.openjdk.java.net/jfx11u/pull/3/files Webrev: https://webrevs.openjdk.java.net/?repo=jfx11u&pr=3&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8260245 Stats: 45773 lines in 673 files changed: 24665 ins; 8082 del; 13026 mod Patch: https://git.openjdk.java.net/jfx11u/pull/3.diff Fetch: git fetch https://git.openjdk.java.net/jfx11u pull/3/head:pull/3 PR: https://git.openjdk.java.net/jfx11u/pull/3
