2006-08-28  Michael Natterer  <mitch@imendio.com>

	* gtk/gtktextbufferserialize.c (serialize_text): don't write out
	</apply_tag> for tags that have already been closed by the logic
	which turns overlapping spans into XML-able trees. Fixes broken
	XML when there are overlapping tags in the buffer. Also free two
	leaked GLists and did some cleanup.

	* tests/Makefile.am
	* tests/testrichtext.c: new test which creates randomly tagged
	GtkTextBuffers and serializes/deserializes them.