[8u] Request for approval for 6477756: GraphicsDevice.getConfigurations() is slow taking 3 or more seconds

[Vadim Pakhnushev]

Hi,

Please approve identical backport from jdk9:
Bug: https://bugs.openjdk.java.net/browse/JDK-6477756
8u webrev: http://cr.openjdk.java.net/~vadim/6477756/webrev.8u/
jdk9 review: 
http://mail.openjdk.java.net/pipermail/awt-dev/2016-May/011297.html

Thanks,
Vadim