2.6.15:

* UIManager: Fix crash when built without exceptions support.
  (Johannes Schmid)
* FontButton: Fix property name warning. (Armin Burgmeier)
* Build:
  - Added --enable-api-maemo-extensions configure option, 
  to optionally provide C++ wrappers for the additional GtkTextBuffer 
  functions in the Maemo version of GTK+.
  (Johannes Schmid, Murray Cumming)
  - autogen.sh improvements (Daniel Elstner)
  - Avoid warning in settings.c. (Murray Cumming)