[8] Review request for 7165112: Incomprehensible garbage in doc for RootPaneContainer

[sergey malenkov]

Hello,

Could you please review the following fix:
fix:http://cr.openjdk.java.net/~malenkov/7165112.8.0/ 
<http://cr.openjdk.java.net/%7Emalenkov/7165112.8.0/>
bug:https://bugs.openjdk.java.net/browse/JDK-7165112
The javadoc partially rewritten.

Thanks,
SAM