RFR: 8242508: Upgrade to Visual Studio 2019 version 16.5.3

[Kevin Rushforth]

This is a toolchain upgrade on Windows from the current Visual Studio 2017 (version 15.9.16) to Visual Studio 2019
(version 16.5.3). This will match a recent upgrade done for JDK 15 -- see
[JDK-8244214](https://bugs.openjdk.java.net/browse/JDK-8244214).

I have run a full build and test using this new compiler.

NOTE: although this isn't strictly dependent on [JDK-8244487](https://bugs.openjdk.java.net/browse/JDK-8244487), which
is out for review as PR #211 , I plan to wait until that one is approved. I will then integrate PR #211 followed by
this PR.

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Commit messages:
 - 8242508: Upgrade to Visual Studio 2019 version 16.5.3

Changes: https://git.openjdk.java.net/jfx/pull/212/files
 Webrev: https://webrevs.openjdk.java.net/jfx/212/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8242508
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jfx/pull/212.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/212/head:pull/212

PR: https://git.openjdk.java.net/jfx/pull/212