to GTK_SENSITIVITY_ON, so that the button is always sensitive or
GTK_SENSITIVITY_OFF to make it insensitive respectively.
+* gdk-pixbuf will use GIO for mime type detection if possible. For
+ this to work, shared-mime-info needs to be installed and XDG_DATA_DIRS
+ set accordingly at configure time. Otherwise, gdk-pixbuf falls
+ back to its built-in sniffing implementation.
+
Release notes for 2.12
======================