- fixed all boards/Makefile.am, the transformation for i18n was not good enough
          and was breaking the game missing_letter.
        - added support for py2exe on windows which allow us to create an embedded package
          with python, pygtk and pycairo all together
        - cleanup in boards/* to replace assert by g_assert and remove uneeded includes.
        - fixed awele to run on windows replace font "12x24" by "sans 12"