[gtkmm] Update .gitignore

[Murray Cumming <murrayc src gnome org>]

commit 2dac20c0ed9ab91c6ba17ea130f9328e197e7dc6
Author: Murray Cumming <murrayc murrayc com>
Date:   Thu Sep 19 13:30:30 2013 +0200

    Update .gitignore

 .gitignore |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/.gitignore b/.gitignore
index 1dfecb1..07d6c31 100644
--- a/.gitignore
+++ b/.gitignore
@@ -254,6 +254,8 @@ gtk/gtkmm/grid.cc
 gtk/gtkmm/grid.h
 gtk/gtkmm/handlebox.cc
 gtk/gtkmm/handlebox.h
+gtk/gtkmm/headerbar.cc
+gtk/gtkmm/headerbar.h
 gtk/gtkmm/hvbox.cc
 gtk/gtkmm/hvbox.h
 gtk/gtkmm/hvbuttonbox.cc
@@ -330,6 +332,8 @@ gtk/gtkmm/paned.cc
 gtk/gtkmm/paned.h
 gtk/gtkmm/papersize.cc
 gtk/gtkmm/papersize.h
+gtk/gtkmm/placessidebar.cc
+gtk/gtkmm/placessidebar.h
 gtk/gtkmm/plug.cc
 gtk/gtkmm/plug.h
 gtk/gtkmm/printcontext.cc
@@ -376,6 +380,8 @@ gtk/gtkmm/recentmanager.cc
 gtk/gtkmm/recentmanager.h
 gtk/gtkmm/requisition.cc
 gtk/gtkmm/requisition.h
+gtk/gtkmm/revealer.cc
+gtk/gtkmm/revealer.h
 gtk/gtkmm/scale.cc
 gtk/gtkmm/scale.h
 gtk/gtkmm/scalebutton.cc
@@ -386,6 +392,8 @@ gtk/gtkmm/scrollbar.cc
 gtk/gtkmm/scrollbar.h
 gtk/gtkmm/scrolledwindow.cc
 gtk/gtkmm/scrolledwindow.h
+gtk/gtkmm/searchbar.cc
+gtk/gtkmm/searchbar.h
 gtk/gtkmm/searchentry.cc
 gtk/gtkmm/searchentry.h
 gtk/gtkmm/selectiondata.cc
@@ -406,6 +414,10 @@ gtk/gtkmm/spinbutton.cc
 gtk/gtkmm/spinbutton.h
 gtk/gtkmm/spinner.cc
 gtk/gtkmm/spinner.h
+gtk/gtkmm/stack.cc
+gtk/gtkmm/stack.h
+gtk/gtkmm/stackswitcher.cc
+gtk/gtkmm/stackswitcher.h
 gtk/gtkmm/statusbar.cc
 gtk/gtkmm/statusbar.h
 gtk/gtkmm/statusicon.cc