Adapt use of HandlerAdapter#getLastModified in MessageDispatcherServlet

[snicoll]

HandlerAdapter#getLastModified is deprecated so we need to adapt the following:

spring-ws/spring-ws-core/src/main/java/org/springframework/ws/transport/http/MessageDispatcherServlet.java

Lines 326 to 336 in fb4ab82

	protected long getLastModified(HttpServletRequest httpServletRequest) {
	WsdlDefinition definition = getWsdlDefinition(httpServletRequest);
	if (definition != null) {
	return wsdlDefinitionHandlerAdapter.getLastModified(httpServletRequest, definition);
	}
	XsdSchema schema = getXsdSchema(httpServletRequest);
	if (schema != null) {
	return xsdSchemaHandlerAdapter.getLastModified(httpServletRequest, schema);
	}
	return messageReceiverHandlerAdapter.getLastModified(httpServletRequest, messageReceiver);
	}