Fix broadcasting to people without permission. Fixes BUKKIT-464. Thanks grandwazir for the PR.

src/main/java/org/bukkit/craftbukkit/CraftServer.java

@@ -813,7 +813,7 @@ public final class CraftServer implements Server {
         Set<Permissible> permissibles = getPluginManager().getPermissionSubscriptions(permission);
 
         for (Permissible permissible : permissibles) {
-            if (permissible instanceof CommandSender) {
+            if (permissible instanceof CommandSender && permissible.hasPermission(permission)) {
                 CommandSender user = (CommandSender) permissible;
                 user.sendMessage(message);
                 count++;