CommonSOAPFaultException: org.xml.sax.SAXParseException: Invalid encoding name "UTF8" - Messages rejected

If a message is received with an invalid encoding the following is reported, the previous behaviour was to assume all messages were "UTF-8" - this issue is to attempt to use the supplied encoding but revert to "UTF-8" if this is not possible.

10:03:46,711 ERROR [SOAPFaultHelperJAXWS] SOAP request exception
org.jboss.ws.core.CommonSOAPFaultException: org.xml.sax.SAXParseException: Invalid encoding name "UTF8".
at org.jboss.ws.core.soap.EnvelopeBuilderDOM.build(EnvelopeBuilderDOM.java:93)
at org.jboss.ws.core.soap.MessageFactoryImpl.createMessage(MessageFactoryImpl.java:294)
at org.jboss.ws.core.soap.MessageFactoryImpl.createMessage(MessageFactoryImpl.java:193)
at org.jboss.wsf.stack.jbws.RequestHandlerImpl.processRequest(RequestHandlerImpl.java:449)