Utils: Make Layouting a top level namespace

The whole machinery is now almost only layoutbuilder.{h,cpp},
mostly independent of the rest of Utils. Idea is to finish the
separation to make it stand-alone usable also outside creator.

Change-Id: I958aa667d17ae26b21209f22412309c5307a579c
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/ios/createsimulatordialog.cpp

@@ -32,7 +32,7 @@ CreateSimulatorDialog::CreateSimulatorDialog(QWidget *parent)
     auto buttonBox = new QDialogButtonBox(QDialogButtonBox::Cancel|QDialogButtonBox::Ok);
     buttonBox->button(QDialogButtonBox::Ok)->setEnabled(false);
 
-    using namespace Utils::Layouting;
+    using namespace Layouting;
 
     Column {
         Form {

src/plugins/ios/iosrunconfiguration.h

@@ -27,7 +27,7 @@ public:
 
     void fromMap(const QVariantMap &map) override;
     void toMap(QVariantMap &map) const override;
-    void addToLayout(Utils::Layouting::LayoutBuilder &builder) override;
+    void addToLayout(Layouting::LayoutBuilder &builder) override;
 
     IosDeviceType deviceType() const;
     void setDeviceType(const IosDeviceType &deviceType);

src/plugins/ios/iossettingswidget.cpp

@@ -94,7 +94,7 @@ IosSettingsWidget::IosSettingsWidget()
     m_pathWidget->addButton(Tr::tr("Screenshot"), this,
                             std::bind(&IosSettingsWidget::onScreenshot, this));
 
-    using namespace Utils::Layouting;
+    using namespace Layouting;
     Column {
         Group {
             title(Tr::tr("Devices")),

src/plugins/ios/simulatoroperationdialog.cpp

@@ -40,7 +40,7 @@ SimulatorOperationDialog::SimulatorOperationDialog(QWidget *parent) :
     m_formatter = new Utils::OutputFormatter;
     m_formatter->setPlainTextEdit(messageEdit);
 
-    using namespace Utils::Layouting;
+    using namespace Layouting;
 
     Column {
         messageEdit,