Improved workaround for new qt documentation, base on dboddie's work.

Make the check more generic, to also work for all other Qt namespaces
than qt.ver.s.ion. Still there's something broken in Qt webkit or so.

Reviewed-by: ck

src/plugins/help/helpviewer_qwv.cpp

@@ -133,9 +133,10 @@ QNetworkReply *HelpNetworkAccessManager::createRequest(Operation /*op*/,
     // the virtual folder
     if (!engine.findFile(url).isValid()) {
         if (url.startsWith(HelpViewer::DocPath)) {
-            if (!url.startsWith(HelpViewer::DocPath + "qdoc/")) {
-                url = url.replace(HelpViewer::DocPath,
-                    HelpViewer::DocPath + QLatin1String("qdoc/"));
+            QUrl newUrl = request.url();
+            if (!newUrl.path().startsWith(QLatin1String("/qdoc/"))) {
+                newUrl.setPath(QLatin1String("/qdoc/") + newUrl.path());
+                url = newUrl.toString();
             }
         }
     }