hg: openjfx/8/graphics/rt: RT-34171: Switch to gradle 1.8 for production builds of FX 8

[hang . vo]

Changeset: 5f3e3aefe569
Author:    kcr
Date:      2013-11-21 16:15 -0800
URL:       http://hg.openjdk.java.net/openjfx/8/graphics/rt/rev/5f3e3aefe569

RT-34171: Switch to gradle 1.8 for production builds of FX 8
Reviewed-by: anthony

! build.gradle