2.13.8 (unstable):

* PrintSettings: Added get/set_number_up_layout(), using the 
  new NumberUpLayout enum.
* SelectionData: Changed get_data() to not return a length too,
  and added get_length(), as it was in gtkmm 2.12, to match latest GTK+.
* Widget: Changed the get_allocation() implementation back to 
  direct struct field access, to match latest GTK+.
  (Murray Cumming)
* Restored maemo-only (ifdefed) API that had been removed accidentally a while ago.
  (Murray Cumming)
* Added a COPYING.tools file because a small gmmproc utility is GPL.
  Bug #550789 (Michael Casadevall, Deng Xiyue)
* Windows build fixes.
  (Armin Burgmeier)