Switch from using Collections.EMPTY_LIST to emptyList.

src/java/org/jivesoftware/util/JiveGlobals.java

@@ -534,7 +534,7 @@ public class JiveGlobals {
 
         // jiveHome not loaded?
         if (openfireProperties == null) {
-            return Collections.EMPTY_LIST;
+            return Collections.emptyList();
         }
 
         return openfireProperties.getAllPropertyNames();
@@ -1103,4 +1103,4 @@ public class JiveGlobals {
     	}
 		return false;
     }
-}
+}
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