org.jboss.ws.core.soap.SOAPFaultImpl should be Serializable

org.jboss.ws.core.soap.SOAPFaultImpl is currently not Serializable at runtime, which is counterintuitive since descendants of Throwable generally are, and all descendants of Throwable are marked as implementing the Serializable interface.

There is a workaround to extract the message and place it in a different Exception class but this is an extra step that should not be necessary.