Use constant rather than magic string.

src/org/hyperic/hq/hqapi1/XmlUtil.java

@@ -61,7 +61,7 @@ public static void serialize(Object o, OutputStream os, Boolean format)
     {
         Marshaller m = CTX.createMarshaller();
         m.setEventHandler(new DefaultValidationEventHandler());
-        m.setProperty("jaxb.formatted.output", format);
+        m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, format);
         m.marshal(o, os);
     }
 }