[8] Request for review: 6607048: clear extra l10n resource files in demo

[Michael Fang]

Hello,

Please help to review the changes for the following CR:
<https://bugs.openjdk.java.net/browse/JDK-6607048>https://bugs.openjdk.java.net/browse/JDK-6607048

The webrev is available here:
http://cr.openjdk.java.net/~mfang/6607048/webrev.00/

Unit testing has been performed by yhuang.

thanks!

-michael