RFR: 8004317 TestLibrary.getUnusedRandomPort() fails intermittently, but exception not reported

[Jim Gish]

Please review 
http://cr.openjdk.java.net/~jgish/Bug8004317-TestLibrary-getUnusedRandomPort-Failure/ 
<http://cr.openjdk.java.net/%7Ejgish/Bug8004317-TestLibrary-getUnusedRandomPort-Failure/>

We're getting intermittent failures on a number of RMI tests attempting 
to get an unused ephemeral port.  This is a temporary change to print a 
stack trace until we can figure what's going on. For some reason the 
test framework isn't surfacing the nested exception.  (There probably 
should be a separate bug for that, but my first priority here is to fix 
the intermittent test failures.)

Thanks,
     Jim

-- 
Jim Gish | Consulting Member of Technical Staff | +1.781.442.0304
Oracle Java Platform Group | Core Libraries Team
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Burlington, MA 01803
jim.gish at oracle.com