This updates the compiler used to build JavaFX on macOS to Xcode 11.3.1 + MacOSX10.15 sdk, which matches the compiler used to build JDK 16.
As noted in the bug report, Xcode 11.3.1 needs macOS 10.14.4 (Mojave) or later to build, but the produced artifacts will be able to run on earlier versions of macOS. ------------- Commit messages: - 8251858: Update to Xcode 11.3.1 Changes: https://git.openjdk.java.net/jfx/pull/291/files Webrev: https://webrevs.openjdk.java.net/jfx/291/webrev.00 Issue: https://bugs.openjdk.java.net/browse/JDK-8251858 Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod Patch: https://git.openjdk.java.net/jfx/pull/291.diff Fetch: git fetch https://git.openjdk.java.net/jfx pull/291/head:pull/291 PR: https://git.openjdk.java.net/jfx/pull/291
