<Swing Dev> [12] RFR JDK-6828982: UIDefaults.getUI swallows original exception

[Prasanta Sadhukhan]

Hi All,

Please review a fix for an issue where it is seen that 
UIDefaults.getUI() swallows the original exception and only emits 
InvocationTargetException without the original stacktrace/message.
Proposed fix is to make sure the original exception/stackTrace is 
embedded in getUIError() message.

Bug: https://bugs.openjdk.java.net/browse/JDK-6828982
webrev: http://cr.openjdk.java.net/~psadhukhan/6828982/webrev.0/

Regards
Prasanta