RFR: JDK-8181383: com/sun/jdi/OptionTest.java fails intermittently with bind failed: Address already in use

[Alex Menkov]

Hi all,

Please review a fix for
https://bugs.openjdk.java.net/browse/JDK-8181383
webrev:
http://cr.openjdk.java.net/~amenkov/OptionTest_socket/webrev/

The change fixes OptionTest and RunToExit tests to avoid "address 
already in use" failures by using dynamic port allocation (address=0).
OptionTest runs debuggee with "suspend=n" and waits it to exit (it does 
not connect to the debugee VM).
RunToExit connects to the debuggee VM, so logic to detect listening port 
is added.

--alex