Add a filechooser subclass which sizes correctly on the OLPC.

This is temporary, gtk needs to be fixed.

sugar/graphics/Makefile.am

@@ -9,6 +9,7 @@ sugar_PYTHON =			\
 	color.py		\
 	ClipboardBubble.py	\
 	entry.py                \
+	filechooser.py		\
 	font.py			\
 	frame.py		\
 	label.py		\

sugar/graphics/filechooser.py

@@ -0,0 +1,10 @@
+import gtk
+
+from sugar.graphics import units
+
+class FileChooserDialog(gtk.FileChooserDialog):
+    def __init__(self, title=None, parent=None,
+                 action=gtk.FILE_CHOOSER_ACTION_OPEN, buttons=None):
+        gtk.FileChooserDialog.__init__(self)
+        self.resize(units.points_to_pixels(7 * 40),
+                    units.points_to_pixels(7 * 30))