code review for jps fix (6637230)

[Daniel D. Daugherty]

Greetings,

I have a fix for the following jps bug:

6637230: 2/3 jps doesn't work for application waiting for direct attach
Summary: Properly handle exceptions thrown when querying a monitored VM.
Reviewed-by:

Here is the URL for the webrev:

   http://cr.openjdk.java.net/~dcubed/6637230-webrev/0/

Thanks, in advance, for any reviews.

Dan