CR 6884837 - jdk6

[Chris Hegarty]

Hi Joe, Alan, Michael,

Can I please ask for review(Alan/Michael)/permission(Joe) to integrate 
this simple testcase change into 6 Open. This change has been in JDK7 
since b74.

CR 6884837: test/java/net/MulticastSocket/SetOutgoingIf.java should 
check if interfaces are up/support multicast

Webrev:
   http://cr.openjdk.java.net/~chegar/6884837/webrev.6Open/webrev/

Thanks,
-Chris.