2010-11-30  Andreas J. Guelzow <aguelzow@pyrshep.ca>

	* openoffice-write.c (odf_write_cell): Write office:string-value.
	The element content may differ also for strings depending on format.
	* openoffice-read.c (oo_cell_start): ODF uses office:string-value,
	while oldstyle OOo uses table:string-value.
	(odf_text_content): new
	(styles_dtd): connect handlers for children of number:text-style