[8u] Request for approval: 7157680 XAWT: Native components should not paint native part on UPDATE event

[Sergey Bylokhov]

Hello,
This is a direct back port from jdk 9 to jdk 8u.

Bug: https://bugs.openjdk.java.net/browse/JDK-7157680
Webrev can be found at: http://cr.openjdk.java.net/~serb/7157680/webrev.00
Review: 
http://mail.openjdk.java.net/pipermail/awt-dev/2014-January/006807.html
jdk9 changeset: http://hg.openjdk.java.net/jdk9/jdk9/jdk/rev/50d65bb9aa72

Reviewers: Petr Pchelko, Anthony Petrov.

-- 
Best regards, Sergey.