git: openjdk/jfx: 8232064: Switch FX build to use JDK 13.0.1 as boot JDK

[Kevin Rushforth]

Changeset: 6892fa1b
Author:    Kevin Rushforth <kcr at openjdk.org>
Date:      2019-12-02 15:36:17 +0000
URL:       https://git.openjdk.java.net/jfx/commit/6892fa1b

8232064: Switch FX build to use JDK 13.0.1 as boot JDK

Reviewed-by: prr, jvos

! build.properties