hg: openjfx/9/rt: RT-40715: [Mac] Swing interop unit tests hangs on headless test machines

[kevin.rushforth at oracle.com]

Changeset: b8f48761a59b
Author:    kcr
Date:      2015-05-04 13:55 -0700
URL:       http://hg.openjdk.java.net/openjfx/9/rt/rev/b8f48761a59b

RT-40715: [Mac] Swing interop unit tests hangs on headless test machines

! build.gradle