minor updates for reflecting forum posts

git-svn-id: http://anonsvn.jboss.org/repos/javassist/trunk@145 30ef5769-5b8d-40dd-aea6-55b5d6557bb3

src/main/javassist/Loader.java

                 || name.startsWith("javax.")
                 || name.startsWith("sun.")
                 || name.startsWith("com.sun.")
+                || name.startsWith("org.w3c.")
+                || name.startsWith("org.xml.")
                 || notDelegated(name))
                 c = delegateToParent(name);