[12] RFR: JDK-8210386: Clipping problems with complex affine transforms

[Laurent Bourgès]

Please review the following bug fix in the MarlinFX renderer for JavaFX 12:
https://bugs.openjdk.java.net/browse/JDK-8210386
https://github.com/javafxports/openjdk-jfx/pull/206

PS: What is the process to backport this bug fix to OpenJFX 11 updates ?
This patch is small and can be applied directly to OpenJFX 11.

Thanks,
Laurent