VCS: Replace AbstractCheckoutJob with Command

Command now provides the same functionality. Deduplicate code.

Change-Id: I789f021050471281870b6ef6a81a94e66fbdf0c7
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

src/plugins/mercurial/clonewizard.h

@@ -49,8 +49,8 @@ public:
 
 protected:
     QList<QWizardPage *> createParameterPages(const QString &path);
-    QSharedPointer<VcsBase::AbstractCheckoutJob> createJob(const QList<QWizardPage *> &parameterPages,
-                                                           QString *checkoutPath);
+    VcsBase::Command *createCommand(const QList<QWizardPage *> &parameterPages,
+                                    QString *checkoutPath);
 
 private:
     const QIcon m_icon;