RFR(XS): 8077423: jstatd is not terminated even though it cannot contact or bind to RMI Registry

[Yekaterina Kantserova]

Hi,

Could I please have a review of this fix.

bug: https://bugs.openjdk.java.net/browse/JDK-8077423
webrev: http://cr.openjdk.java.net/~ykantser/8077423/webrev.00/

A couple of comments about changes in sun/tools/jstatd/JstatdTest.java. 
If the suggested fix will be accepted there will be no need of 
waitForJstatdRMI(), because jstad will either be started properly or 
will terminate.

A check has been added that there is no RMi Registry already running on 
default port. Otherwise the test will fail fast.

A sanity check for "-nr" option has been added as well.

http://docs.oracle.com/javase/7/docs/technotes/tools/share/jstatd.html
"-nr
     Do not attempt to create an internal RMI registry within the jstatd 
process when an existing RMI registry is not found."


Thanks,
Katja