2.4.8:

* Fixed several reference-counting problems in rarely-used methods.
  (Murray Cumming)
* Some MSVC++ .Net 2003 fixes. However, a compiler bug stops this from 
  working properly. (Timothy Shead, Cedric Gustin)
* Some SUN Forte fixes. (Murray Cumming)
* Documentation: book/menus_and_toolbars/: Show how to use a 
  non-stock icon. (Fredrik Arnerup)