SoapFault handling refactored: client now returns server fault codes + more details in message

tests/SwaSenderSoapFaultEndpoint.php

@@ -0,0 +1,9 @@
+<?php
+
+const FIXTURES_DIR = __DIR__.'/Fixtures';
+
+$soapServer = new \SoapServer(FIXTURES_DIR.'/DummyService.wsdl');
+$soapServer->fault(
+    911,
+    'This is a dummy SoapFault.'
+);