RFR [9]8139371: Three langtools test failures after the removal of sun.misc.Lock

[Mandy Chung]

> On Oct 12, 2015, at 6:53 AM, Chris Hegarty <chris.hegarty at oracle.com> wrote:
> 
> The removal of sun.misc.Lock and a related type (JDK-8139307 [1])
> has triggered three langtools test to fail, as they refer to the
> removed types:
> 
> tools/javac/proprietary/WarnClass.java
> tools/javac/warnings/6594914/T6594914b.java
> tools/jdeps/APIDeps.java
> 
> Another internal type should be used instead. The sun.security.x509
> package seems stable, and is being used in other areas, jigsaw/jake,
> to test accessibility.
> 
> http://cr.openjdk.java.net/~chegar/8139371/webrev.00/

jdeps test change looks fine to me.

Mandy