[11][14] RFR: Request to backport April 2020 CPU changes

[Kevin Rushforth]

Hi Johan,

I request approval to backport the changes from the just-released April 
2020 CPU to 11-dev (for 11.0.7) and the jfx14 branch of jfx (for 14.0.1).

https://cr.openjdk.java.net/~kcr/cpu-2004-sync/11-dev/webrev/
https://github.com/kevinrushforth/jfx/compare/f8c235b...14-cpu-2004-sync

Each is a straight backport (patch applies cleanly) of the one FX fix 
that went into the April CPU.

NOTE: For the 14.0.1 backport, since this is an integration of 
already-reviewed fixes into the jfx repo, I will push it directly into 
the jfx14 branch rather than via a pull request. The 11.0.7 backport 
will be pushed to the HG 11-dev repo.

Thanks.

-- Kevin