Release 67 integration review, issue 158421

Hi,

I'm going to integrate fix for issue #158421 to release67 clone.

Issue: http://www.netbeans.org/issues/show_bug.cgi?id=158421

Subject: [G1 GC from JDK 6.0u14/7] java.lang.AssertionError: Pool: Code 
Cache Type: Non-heap memory TresholdSupported: true

Impact assessment: Lots of exceptions are being thrown from the IDE when 
the user tries to use the new G1 Garbage Collector (using 
-XX:+UnlockExperimentalVMOptions -XX:+UseG1GC command line options), due 
to missing support for memory usage threshold. The IDE is unusable.

Risk assessment: low - the support for memory usage threshold is checked 
on start-up and if missing, the IDE refuses to start with an explanation

QE verification and peer revue: passed

Fix for release67:
http://www.netbeans.org/nonav/issues/showattachment.cgi/83405/158421.diff
in trunk:
http://hg.netbeans.org/main-silver?cmd=changeset;node=cea8c226c1d5
http://hg.netbeans.org/main-silver?cmd=changeset;node=6063da7c17b1

Thanks,
    Jan