[8u20] Request for approval for JDK-8042882 & JDK-8032441 - langtools/test/Makefile cleanup

[Dan Smith]

This patch adds some extra optional parameters to the langtools test Makefile, and also eliminates use of a deprecated (and useless in 8+) JVM option.  Please approve the backport.

Bug report #1: https://bugs.openjdk.java.net/browse/JDK-8042882
Bug report #2: https://bugs.openjdk.java.net/browse/JDK-8032441
Changeset: http://hg.openjdk.java.net/jdk9/dev/langtools/rev/464d69f73516
JDK 9 review: http://mail.openjdk.java.net/pipermail/build-dev/2014-May/012610.html
jdk9 reviewer: mduigou

—Dan