RFR: 8144074: [PIT] Crash calling Toolkit.getScreenSize() on Windows.

[Phil Race]

This resolves a crash on WIndows startup due to changes in the hidpi support
that requires the graphics devices be initialised first in order to get 
screen dimensions.

http://cr.openjdk.java.net/~prr/8144074/
https://bugs.openjdk.java.net/browse/JDK-8144074

-phil.