ios: detect switch usermode -> dev mode

this does polling, but only with devices in user mode connected...

Change-Id: I828715a2b4a35f8f9b3bdbcf0da9a74990f3047f
Reviewed-by: Daniel Teske <daniel.teske@digia.com>
Reviewed-by: Kai Koehne <kai.koehne@digia.com>
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>

src/plugins/ios/iosdevice.h

@@ -38,6 +38,8 @@
 #include <QMap>
 #include <QString>
 #include <QSharedPointer>
+#include <QStringList>
+#include <QTimer>
 
 namespace ProjectExplorer{
 class Kit;
@@ -100,8 +102,12 @@ public slots:
                     const Ios::IosToolHandler::Dict &info);
     void infoGathererFinished(Ios::IosToolHandler *gatherer);
     void monitorAvailableDevices();
+private slots:
+    void updateUserModeDevices();
 private:
     IosDeviceManager(QObject *parent = 0);
+    QTimer m_userModeDevicesTimer;
+    QStringList m_userModeDeviceIds;
 };
 
 namespace IosKitInformation {