Need reviewers - 3 bugs

[Tim Bell]

Hi Kelly:
> Need a reviewer.
> 
> The jhat change is from keith.randall at gmail.com. I wasn't able to
> come up with a testcase for that change.
> 
> The other two just fix a couple of broken tests and remove them from
> the ProblemList.
> 
> 6892742: Improve root set used by jhat
> 6902323: Fix testcase sun/tools/native2ascii/NativeErrors.java
> 6902325: Fix testcase sun/tools/jhat/HatHeapDump1Test.java
> 
> http://cr.openjdk.java.net/~ohair/openjdk7/jdk7-tl-jhat-6892742/webrev/

Looks good to me - approved.

Tim