Review request for JDK-8147630: Wrong test result pushed to 8u-dev

[Hannes Wallnoefer]

In my previous backport to 8u-dev I applied the patch twice and not 
noticed new lines were added twice to 
test/script/basic/minuszero.js.EXPECTED.

Please review:

Webrev: http://cr.openjdk.java.net/~hannesw/8147630/webrev/
Bug: https://bugs.openjdk.java.net/browse/JDK-8147630

Thanks and sorry for the inconvenience.
Hannes