[gtkmm] Added newin tags

[Murray Cumming <murrayc src gnome org>]

commit b0faaf5642dde8a9e4dea4869a6920b659b02819
Author: Murray Cumming <murrayc murrayc com>
Date:   Thu Feb 10 12:00:00 2011 +0100

    Added newin tags

 gtk/src/appchooserbutton.hg |    2 ++
 gtk/src/appchooserdialog.hg |    2 ++
 gtk/src/appchooserwidget.hg |    2 ++
 3 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/gtk/src/appchooserbutton.hg b/gtk/src/appchooserbutton.hg
index 5f32f05..25376b9 100644
--- a/gtk/src/appchooserbutton.hg
+++ b/gtk/src/appchooserbutton.hg
@@ -32,6 +32,8 @@ namespace Gtk
  * @image html appchooserbutton1.png
  *
  * @ingroup Widgets
+ *
+ * @newin{3,0}
  */
 class AppChooserButton
   : public ComboBox,
diff --git a/gtk/src/appchooserdialog.hg b/gtk/src/appchooserdialog.hg
index b081949..fc12af0 100644
--- a/gtk/src/appchooserdialog.hg
+++ b/gtk/src/appchooserdialog.hg
@@ -37,6 +37,8 @@ namespace Gtk
  * @image html appchooserbutton1.png
  *
  * @ingroup Dialogs
+ *
+ * @newin{3,0}
  */
 class AppChooserDialog
   : public Dialog,
diff --git a/gtk/src/appchooserwidget.hg b/gtk/src/appchooserwidget.hg
index 31eecc6..7ced145 100644
--- a/gtk/src/appchooserwidget.hg
+++ b/gtk/src/appchooserwidget.hg
@@ -34,6 +34,8 @@ namespace Gtk
  * @image html appchooserwidget1.png
  *
  * @ingroup Widgets
+ *
+ * @newin{3,0}
  */
 class AppChooserWidget
   : public Box,