change to 1.5R5 prerelease

js/rhino/src/org/mozilla/javascript/Context.java

@@ -386,7 +386,7 @@ public class Context {
      *         number, and date.
      */
      public String getImplementationVersion() {
-        return "Rhino 1.5 release 4 2003 02 10";
+        return "Rhino 1.5 release 5 0000 00 00";
      }
 
     /**