#152 Generated XRC use old namespace

[BMH1980]

wxFormBuilder creates XRC code with the old namespace http://www.wxwindows.org/wxxrc instead of the new one http://www.wxwidgets.org/wxxrc .

See http://docs.wxwidgets.org/3.0.0/overview_xrcformat.html .

I’m using wxFormBuilder 3.5.1-RC1 (3.5.01-0ubuntu1~utopic1).