[8u] RFA 8022291: Mac OS: Unexpected JavaLaunchHelper message displaying

[David Buck]

Hi!

Please approve this trivial backport from 9 to 8u. The changeset applies 
cleanly after unshuffling. All tests pass on default JPRT run and I have 
manually confirmed that issue no longer reproduces with this change.

bug report:
https://bugs.openjdk.java.net/browse/JDK-8022291

jdk9 changeset:
http://hg.openjdk.java.net/jdk9/jdk9/jdk/rev/423a8d66fe60

jdk9 review thread:
http://mail.openjdk.java.net/pipermail/awt-dev/2016-June/011527.html

Cheers,
-Buck