Move wizards' cancel button to the left on Mac.

It is too far to the left now, but that can't be helped
(it's a Qt limitation).

Task-number: QTCREATORBUG-6156
Change-Id: I0201356234abb618dc3b573673d512c0a97c4839
Reviewed-on: http://codereview.qt-project.org/5406
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>

src/libs/utils/filewizarddialog.cpp

@@ -51,6 +51,15 @@ FileWizardDialog::FileWizardDialog(QWidget *parent) :
     setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
     setOption(QWizard::NoCancelButton, false);
     setOption(QWizard::NoDefaultButton, false);
+#ifdef Q_OS_MAC
+    setButtonLayout(QList<QWizard::WizardButton>()
+                    << QWizard::CancelButton
+                    << QWizard::Stretch
+                    << QWizard::BackButton
+                    << QWizard::NextButton
+                    << QWizard::CommitButton
+                    << QWizard::FinishButton);
+#endif
     const int filePageId = addPage(m_filePage);
     wizardProgress()->item(filePageId)->setTitle(tr("Location"));
     connect(m_filePage, SIGNAL(activated()), button(QWizard::FinishButton), SLOT(animateClick()));