TBR: syncslidepresenter: Fix RMI hang.

We suddenly started getting RMI hangs on LocateRegistry.createRegistry().
This seems to fix it.

Change-Id: Iece82fa1fd558460d970d0e0585bc4717c1e1058
diff --git a/projects/syncslidepresenter/src/main/java/io/v/syncslidepresenter/Main.java b/projects/syncslidepresenter/src/main/java/io/v/syncslidepresenter/Main.java
index e706aaa..73ba305 100644
--- a/projects/syncslidepresenter/src/main/java/io/v/syncslidepresenter/Main.java
+++ b/projects/syncslidepresenter/src/main/java/io/v/syncslidepresenter/Main.java
@@ -197,6 +197,7 @@
         logger.info("inside startSwingServer");
         // Make command-Q do the same as closing the main frame (i.e. exit).
         System.setProperty("apple.eawt.quitStrategy", "CLOSE_ALL_WINDOWS");
+        System.setProperty("java.rmi.server.hostname", "localhost");
 
         JFrame frame = new JFrame();
         enableOSXFullscreen(frame);