only scanobj stuff from our source module.  Not sure yet if that's correct, given the hierarchy stuff :)

Original commit message from CVS:

* common/gstdoc-scangobj:
* common/gtk-doc-plugins.mak:
* docs/libs/Makefile.am:
* docs/plugins/gst-plugins-base-plugins.args:
* docs/plugins/gst-plugins-base-plugins.hierarchy:
* docs/plugins/gst-plugins-base-plugins.interfaces:
* docs/plugins/gst-plugins-base-plugins.prerequisites:
* docs/plugins/gst-plugins-base-plugins.signals:
only scanobj stuff from our source module.  Not sure yet
if that's correct, given the hierarchy stuff :)