debugger: make alphabetic sorting of struct members optional.

Task-number: QTCREATORBUG-1608

src/plugins/debugger/gdb/classicgdbengine.cpp

@@ -426,7 +426,9 @@ void GdbEngine::handleDebuggingHelperValue2Classic(const GdbResponse &response)
     setWatchDataDisplayedType(data, response.data.findChild("displaytype"));
     QList<WatchData> list;
     parseWatchData(watchHandler()->expandedINames(),
-        data, contents, &list);
+        data, contents,
+        theDebuggerBoolSetting(SortStructMembers),
+        &list);
     //for (int i = 0; i != list.size(); ++i)
     //    qDebug() << "READ: " << list.at(i).toString();
     watchHandler()->insertBulkData(list);