Restored some behavior in genVSproperties that enabled ARM builds and cross-compilation on Windows. Verified that I can build on ARM but have no way of testing other architectures.
------------- Commit messages: - Restored some lost behavior that enabled ARM builds on Windows Changes: https://git.openjdk.org/jfx/pull/1580/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1580&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8340980 Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod Patch: https://git.openjdk.org/jfx/pull/1580.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/1580/head:pull/1580 PR: https://git.openjdk.org/jfx/pull/1580
