[JDK-8233421](https://bugs.openjdk.java.net/browse/JDK-8233421)
This bumps the windows compiler version to VS2017 version 15.9.16 to match JDK 14. I have run a full build and test, including WebKit and media. ---------------- Commits: - aab19fa8: 8233421: Upgrade to Visual Studio 2017 version 15.9.16 Changes: https://git.openjdk.java.net/jfx/pull/40/files Webrev: https://webrevs.openjdk.java.net/jfx/40/webrev.00 Issue: https://bugs.openjdk.java.net/browse/JDK-8233421 Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod Patch: https://git.openjdk.java.net/jfx/pull/40.diff Fetch: git fetch https://git.openjdk.java.net/jfx pull/40/head:pull/40 PR: https://git.openjdk.java.net/jfx/pull/40
