keyword: inform user about current keywordset in kwdemo
The kwdemo --default output now looks roughly like this:
configuration using default cvs keywordset
[extensions]
keyword =
[keyword]
demo.txt =
[keywordset] * section added with this change
svn = False
[keywordmaps]
...
.. Common link and substitution definitions.
.. |hg(1)| replace:: **hg**\ (1)
.. _hg(1): hg.1.html
.. |hgrc(5)| replace:: **hgrc**\ (5)
.. _hgrc(5): hgrc.5.html
.. |hgignore(5)| replace:: **hgignore**\ (5)
.. _hgignore(5): hgignore.5.html