Enable documentation.

Enable documentation.

Original commit message from CVS:
2005-11-06  Julien MOUTTE  <julien@moutte.net>

* Makefile.am:
* autogen.sh:
* configure.ac:
* docs/Makefile.am:
* docs/plugins/.cvsignore:
* docs/plugins/Makefile.am:
* docs/plugins/gst-plugins-bad-plugins-decl-list.txt:
* docs/plugins/gst-plugins-bad-plugins-decl.txt:
* docs/plugins/gst-plugins-bad-plugins-docs.sgml:
* docs/plugins/gst-plugins-bad-plugins-sections.txt:
* docs/plugins/gst-plugins-bad-plugins-undocumented.txt:
* docs/plugins/gst-plugins-bad-plugins.args:
* docs/plugins/gst-plugins-bad-plugins.hierarchy:
* docs/plugins/gst-plugins-bad-plugins.interfaces:
* docs/plugins/gst-plugins-bad-plugins.prerequisites:
* docs/plugins/gst-plugins-bad-plugins.signals:
* docs/plugins/gst-plugins-bad-plugins.types:
* docs/plugins/inspect/plugin-dfbvideosink.xml:
* docs/version.entities.in: Enable documentation.
* examples/Makefile.am:
* examples/directfb/Makefile.am:
* examples/directfb/decker.ttf:
* examples/directfb/dfblogo.png:
* examples/directfb/gstdfb.c: (myclock), (dynamic_link),
(size_changed), (setup_dynamic_link), (main): Add an example
application for DirectFB.