Revision 2478

* Thuban/UI/about.py (unicodeToLocale): Use getdefaultlocale
instead of getlocale because getlocale doesn't return a usable
encoding name on a german windows 2000

* setup.py: windows build: Removed the absolute path names and
made all prfixes relative to the directory containing setup.py.
Makes it a little easier to adapt to a different system.