UI files: Do not polute the global Ui namespace

Make sure all ui-files are in the plugin's internal namespace.

Change-Id: Ifb2c3093441e8feb89e46f52fbb386fc316cfd13
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/debugger/debuggerdialogs.h

@@ -45,6 +45,8 @@ class QPushButton;
 class QLineEdit;
 class QDialogButtonBox;
 
+namespace Debugger {
+namespace Internal {
 namespace Ui {
 class AttachCoreDialog;
 class AttachExternalDialog;
@@ -53,6 +55,8 @@ class StartRemoteDialog;
 class AttachToQmlPortDialog;
 class StartRemoteEngineDialog;
 } // namespace Ui
+} // namespace Internal
+} // namespace Debugger
 
 QT_END_NAMESPACE