hg: jdk9/sandbox/jdk: 8157166: Update spec to account for platforms that do not support multicast

[chris.hegarty at oracle.com]

Changeset: 591f9fd7a6b9
Author:    chegar
Date:      2016-06-22 09:21 +0100
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/591f9fd7a6b9

8157166: Update spec to account for platforms that do not support multicast
Reviewed-by: alanb

! src/java.base/share/classes/java/net/MulticastSocket.java
! src/java.base/share/classes/java/nio/channels/MulticastChannel.java