Original commit message from CVS:
2005-11-21  Andy Wingo  <wingo@pobox.com>

* gst/gsttagsetter.h:
* gst/gsttaglist.h:
* gst/gststructure.h:
* gst/gstcaps.h:
* gst/gstutils.h: Sprinkle NULL_TERMINATED to taste.