Ignore "Id" property while reporting unrecognized configuration properties.

git-svn-id: https://svn.apache.org/repos/asf/incubator/openjpa/trunk@492645 13f79535-47bb-0310-9956-ffa450edef68

openjpa-lib/src/main/java/org/apache/openjpa/lib/conf/ConfigurationImpl.java

@@ -633,7 +633,8 @@ public class ConfigurationImpl
         // <prefix>.properties System property; remove that property so we
         // we don't warn about it
         Configurations.removeProperty("properties", remaining);
-
+        Configurations.removeProperty("Id", remaining);
+        
         // now warn if there are any remaining properties that there
         // is an unhandled prop
         Map.Entry entry;