Request for approval 8075609: java.lang.IllegalArgumentException: aContainer is not a focus cycle root of aComponent

[Vivi An]

Hello,

Could you please approve the straight back-port for the fix for 8075609 to jdk8u-dev?

Bug:https://bugs.openjdk.java.net/browse/JDK-8075609
Webrev:http://cr.openjdk.java.net/~van/8075609/webrev.00/
  
Review Threads:
http://mail.openjdk.java.net/pipermail/swing-dev/2015-May/004495.html
http://mail.openjdk.java.net/pipermail/swing-dev/2015-April/004463.html

Regards,

~ Vivi