RR(S): JDK-8004213 jdp packet need pid, broadcast interval and rmi server hostname fields.

[Dmitry Samersoff]

Hi Everyone,

This fix covers

JDK JDK-8004213 JDP packets should contain PID
JDK-8004215 JDP packets should contain the configured broadcast interval
JDK-8007071 JDP does not work well with java.rmi.server.hostname overrides.

and add three extra fields to JDP packet: PID, rmi server name,
broadcast interval.

PID gathering code mostly borrowed from hotspot testlibrary.

http://cr.openjdk.java.net/~dsamersoff/JDK-8004213/webrev.01/

-Dmitry

-- 
Dmitry Samersoff
Oracle Java development team, Saint Petersburg, Russia
* I would love to change the world, but they won't give me the sources.