Introduce a namespace ast node

Introduce a namespace ast node

2008-05-08  Johan Dahlin  <johan@gnome.org>

        * giscanner/ast.py:
        * giscanner/girwriter.py:
        * giscanner/glibtransformer.py:
        * giscanner/transformer.py:
        * tools/g-ir-scanner:
        Introduce a namespace ast node

svn path=/trunk/; revision=268